Configurator guide

How to order a U shaped sink drawer: step by step configurator guide

To order a U shaped sink drawer, you build it field by field in our configurator: the outside box size, three numbers that place the notch around your drain, your slide prep, then wood, front, sides and bottom. Here is every field in order, with every price and a worked 36 in sink base example.

Quick answer. Open the custom U shaped sink drawer box and work down the page: the outside box size (it opens on a 30 in wide, 21 in deep, 4 in tall box), the notch’s three numbers (distance to notch center from the left outside edge of the box, notch width, and distance from the front to the notch), slide prep (“Notching”: None for side mount slides, or Notched & Drilled For Undermount Slides plus your slide model and clips), then wood, drawer front, and sides and bottom. Prices start from a $58.99 base, the Rectangular U notch, full height adds $74.99 to every box, and the box the configurator opens on totals $209.95, the “From $209.95” on the product page and category cards. For a frameless 36 in sink base, a 34 3/32 x 21 x 7 in Baltic Birch box notched for Blum TANDEM, with a centered 12 in notch 9 in from the front, totals $265.95.

Prices as of October 2026; the configurator always shows the live price as you build.

Before you start: what to measure

Have these on paper first. Typical boxes for 30, 33 and 36 in cabinets are in sink base drawer sizes.

  • The opening. Width, inside depth and clear height, as in our how to measure guide.
  • Your slide. The exact undermount model, or side mount.
  • The plumbing. Its left and right edges and the distance back to the frontmost pipe, as in how to measure plumbing for a U shaped drawer.
  • The lowest item over the legs, such as shutoff valves. It limits the box height.

Step 1: Size, width, height and depth

Every size is the outside of the box, cut to the 1/32 inch, and we build exactly what you enter. Make your slide deduction first: side mount boxes are 1 in narrower than the opening, and undermount boxes follow the slide maker’s rule; the table in step 2 has the common ones. The configurator opens on a 30 in wide, 21 in deep, 4 in tall box; change each to yours.

“Width (Inches)”

Whole inches; with the fraction, boxes run 6 to 35 31/32 in wide.

Width (Inches)Price
6″ Dovetail Drawer Box or 7″ Dovetail Drawer Box$0
8″ Dovetail Drawer Box$18.99
9″ Dovetail Drawer Box$20.99
10″ Dovetail Drawer Box$22.99
11″ Dovetail Drawer Box$23.99
12″ Dovetail Drawer Box$26.99
13″ Dovetail Drawer Box$29.99
14″ Dovetail Drawer Box$31.99
15″ Dovetail Drawer Box$34.99
16″ Dovetail Drawer Box$36.99
17″ Dovetail Drawer Box$40.99
18″ Dovetail Drawer Box$43.99
19″ Dovetail Drawer Box$44.99
20″ Dovetail Drawer Box$45.99
21″ Dovetail Drawer Box$46.99
22″ Dovetail Drawer Box$48.99
23″ Dovetail Drawer Box$49.99
24″ Dovetail Drawer Box$50.99
25″ Dovetail Drawer Box$51.99
26″ Dovetail Drawer Box$53.99
27″ Dovetail Drawer Box$55.99
28″ Dovetail Drawer Box$56.99
29″ Dovetail Drawer Box$58.99
30″ Dovetail Drawer Box$59.99, the default
31″ Dovetail Drawer Box$60.99
32″ Dovetail Drawer Box or 33″ Dovetail Drawer Box$61.99
34″ Dovetail Drawer Box$86.99
35″ Dovetail Drawer Box$90.99

For a 42 in sink base, contact us before you order.

“Width Fraction”

Adds 0 to 31/32 in, in 1/32 in steps, at $0: for 34 3/32 in, pick 34" Dovetail Drawer Box, then 3/32 in. Leave it on 0/0 (No Adjustment) for a whole inch. The preview and its spec line show the exact width, so a wrong fraction stands out.

“Height (Inches)”

The height of the box sides; with the fraction, 2 to 12 3/4 in.

Height (Inches)Price
2″ Inches (H) or 3″ Inches (H)$0
4″ Inches (H)$3.99, the default
5″ Inches (H)$19.99
6″ Inches (H)$23.99
7″ Inches (H)$34.99
8″ Inches$39.99
9″ Inches$41.99
10″ Inches$55.99
11″ Inches$56.99
12″ Inches (H)$57.99

The trap sits in the full height notch, so it never limits height; valves, pipes or a disposal over the legs do. Keep the box top about 1 in below the lowest one (our suggestion), and allow for the room under the box: 9/16 in for Blum TANDEM 563, per Blum.

“Height Fraction”

Adds 0 to 3/4 in, in 1/32 in steps, at $0. For 3 5/8 in, pick 3" Inches (H), then 5/8 in. Leave it on 0/0 (No Adjustment) for a whole inch.

“Custom Depth (Inches)”: side mount

This field shows while “Notching” in step 3 is None, which it is when the configurator opens. Most sink bases take a 21 in box on 21 in slides, the default.

Custom Depth (Inches)Price
9″ Inches (D)$0
10″ Inches (D)$6.99
11″ Inches (D) through 22″ Inches (D)$11.99 each; 21″ Inches (D) is the default
23″ Inches (D) and 24″ Inches (D)$19.99 each

“Depth Fraction”: side mount

Shows with “Custom Depth (Inches)” and adds 0 to 31/32 in, in 1/32 in steps, at $0: for 21 1/4 in, pick 21" Inches (D), then 1/4 in. Leave it on 0/0 (No Adjustment) for a whole inch. Undermount depths are whole inches only.

“Depth Selection”: undermount runner lengths

This list replaces the two custom depth fields once you choose Notched & Drilled For Undermount Slides in step 3. The box is as deep as the runner is long, so you pick from your model’s lengths (step 3 table), and the depth you already chose carries over when the list has it; prices match across every list.

Depth SelectionPrice
9” Inches (D) or 12” Inches (D)$0
15” Inches (D), 18” Inches (D) or 21” Inches (D)$9.99
24” Inches (D)$11.99
27” Inches (D)$15.99
30” Inches (D)$18.99

The first length is the default, so two models charge from the start: Salice Progressa+ at 15” Inches (D), $9.99, and Wurth PRO600 Heavy Duty at 24” Inches (D), $11.99.

Step 2: U shape notch, the three numbers

PLAN VIEW, INCHES, TO SCALE OPEN BACK LEFT LEG RIGHT LEG FRONT SECTION 11 1/16 MIN 3 IN 11 1/32 MIN 3 IN B NOTCH WIDTH 12 A TO NOTCH CENTER 17 1/16 W BOX WIDTH 34 3/32 NOTCH DEPTH 12 D MINUS C MIN 3 IN C FRONT TO NOTCH 9 MIN 3 IN D BOX DEPTH 21

Three numbers, A, B and C, place one full height rectangular notch, open at the back; W is box width and D box depth. Measure your plumbing, enter the numbers, then check the drawing in the preview: its Top view draws this same layout, which is to scale for the example below.

“U notch”

The only choice, Rectangular U notch, full height, is $74.99 and already selected. L shapes, partial height notches and two notches go through the instant quote.

“Distance to notch center (inches, from the left outside edge)”

A runs from the left outside edge of the box to the middle of the notch, not from the cabinet and not to a notch edge. Work it out from the cabinet:

  1. Find your left reference: the inside face of the left cabinet side (frameless) or the inside edge of the left face frame stile.
  2. Measure from it to the left edge (L) and right edge (R) of everything that passes through the drawer: tailpiece, P trap, trap arm, and a disposal that hangs into the box height.
  3. Add L and R and divide by 2. That is the plumbing center.
  4. Subtract the slide clearance on the left and round to the nearest 1/32 in. That is A.
SlideBox widthClearance on the left
SIDE MOUNT, STANDARD OR SOFT CLOSEOpening minus 1 in1/2 in
BLUM TANDEM OR MOVENTO, 5/8 IN SIDESOpening minus 13/32 in13/64 in, about 7/32 in
BLUM TANDEM OR MOVENTO, 1/2 IN SIDESOpening minus 5/8 in5/16 in
OTHER UNDERMOUNTPer the slide makerHalf the width deduction

Enter A as a whole inch plus a fraction, from 4 1/2 to 31 1/2 in, in 1/32 in steps: pick 17 in the whole inch box and 1/16 in the fraction box for 17 1/16 in. The preview draws the notch exactly where A puts it.

“Notch width (inches)”

B is the open space between the two notch walls: R minus L, plus about 1 in each side (our suggestion, not a rule). If a disposal hangs into the box height, size B to the disposal body. The field takes 3 to 29 31/32 in, and its preview callout is red.

“Distance from the front to the notch (inches)”

C runs from the front outside face of the box to where the notch opening starts. Measure from the box front line (the front edge of the cabinet sides, or the back of a face frame) to the frontmost pipe, minus about 1 in (our suggestion). The field takes 3 to 27 in, and its callout is red too.

You never type the notch depth (D minus C) or the legs (left: A minus half of B; right: W minus A minus half of B). Both legs, C and the notch depth must each be at least 3 in.

Worked example: a 36 in sink base, from tape measure to numbers

A frameless 36 in sink base, a centered drain, new Blum TANDEM plus BLUMOTION 563 runners and 5/8 in sides.

  1. Width. The opening is 34 1/2 in (36 minus 1 1/2), and 34 1/2 minus 13/32 = 34 3/32 in. That is W.
  2. Depth. 22 1/2 in inside clears the 21 15/16 in a 21 in TANDEM needs, per Blum, so D is 21 in.
  3. Height. The shutoff valves over the legs sit 8 9/16 in above the cabinet floor: 8 9/16 minus 1 in of room minus 9/16 in under the box = 7 in.
  4. A. The plumbing runs from L = 12 1/4 in to R = 22 1/4 in off the left cabinet side. (12 1/4 plus 22 1/4) divided by 2 = 17 1/4 in, and 17 1/4 minus 13/64 = 17 3/64 in, which rounds to 17 1/16 in. Check: half of 34 3/32 is also 17 3/64.
  5. B. 22 1/4 minus 12 1/4 = 10 in, plus 1 in each side = 12 in.
  6. C. The front of the trap is 10 in behind the front edge of the cabinet sides: 10 minus 1 = 9 in.
  7. Rules. Notch depth: 21 minus 9 = 12 in. Left leg: 17 1/16 minus 6 = 11 1/16 in. Right leg: 34 3/32 minus 17 1/16 minus 6 = 11 1/32 in. All clear 3 in, and 11 1/16 plus 12 plus 11 1/32 = 34 3/32.
FieldEnter
Width (Inches) and Width Fraction34″ Dovetail Drawer Box, $86.99, plus 3/32
Height (Inches)7″ Inches (H), $34.99
Custom Depth (Inches)21″ Inches (D); once you pick the slide in step 3 it carries over to 21” Inches (D), $9.99, in “Depth Selection”
Distance to notch center (inches, from the left outside edge)17 1/16
Notch width (inches)12
Distance from the front to the notch (inches)9
NotchingNotched & Drilled For Undermount Slides
Slide Brand/ModelBlum TANDEM plus BLUMOTION 563

Priced, this is Example 1 below: the $58.99 base plus the three priced lines above and the $74.99 notch comes to $265.95. On side mount slides: a 33 1/2 in box and A = 17 1/4 minus 1/2 = 16 3/4 in (16.75).

“Plumbing notes (optional)”

Free text for the rest of the cabinet: a disposal, water lines, a dishwasher hose, and the height of the lowest item over each leg. Photos help: email one straight on and one from above, tape measure in frame, to Sales@gritlyusa.com with your order number.

Step 3: Slide prep, slide model and clips

Which slides will the box run on? For undermount slides we notch and drill the back to match; choose None for side mount slides. Everything here is free except clips.

“Notching”: side mount or undermount

  • None, $0, the default. A plain box for side mount slides.
  • Notched & Drilled For Undermount Slides, $0. We cut the rear notch and drill the hook holes at the back of each outer leg, so the box drops onto undermount runners. The live 3D preview shows both.

The notched choice opens “Slide Brand/Model” below and turns the depth field in step 1 into “Depth Selection”.

“Slide Brand/Model”

All 16 choices are $0. Pick your exact runner and we match the notch and drilling to it.

Slide Brand/ModelClip choice, $6.99Depths, inches, every 3
Standard Notching W/DrillNo clips field9 to 30
Blum TANDEM plus BLUMOTION 563Blum T51.1901 Clips9 to 21
Blum MOVENTO 763Blum T51.7601 Clips12 to 30
Grass DynaproGrass Locking Clips9 to 30
Salice ProgressaSalice AFCGXX3B Locking Clips9 to 21
Salice Progressa+Salice AFCGXX3B Locking Clips15 to 30
Salice Futura Smove A7555Salice A750.010 Clips9 to 21
Salice Futura Smove A7955Salice A750.010 Clips12 to 21
Hettich Quadro V6Hettich 9144597 Catches9 to 24
Wurth PRO500PRO500 Front Locking Devices12 to 21
Wurth PRO560PRO560 3D / 6-Way Front Locking Devices12 to 21
Wurth PRO600 StandardFive PRO600 clips9 to 21
Wurth PRO600 Heavy DutyFive PRO600 clips24 to 30
Wurth PRO634PRO634 2D Front Locking Devices9 to 21
Wurth PRO Economy / PRO EcoPRO Economy Front Locking Devices12 to 21
Other or unlisted slide model (I’ll enter it)No clips field9 to 30

The default, Standard Notching W/Drill, is our standard notch with drilled hook holes. Find your model on the runner or its box, or in our undermount drawer slide guide and Blum drawer box guide.

“Your Slide Brand & Model”: when your slide is not listed

This text box appears when you choose Other or unlisted slide model (I’ll enter it). Type the brand and model from the runner’s label or box, for example King Slide 1B68, and we match the notch and drilling to it.

“Clips”: front locking devices

Every named model in the table gets a “Clips” field: No Clips (the default) is $0, and the clip is $6.99, installed by us. Wurth PRO600 Standard and Wurth PRO600 Heavy Duty offer five at $6.99 each: PRO600-FCLIP2D, PRO600-FCLIP2D-NF, PRO600-FCLIP3D, PRO600-FCLIP3D-NF and PRO600-FCLIPNARROW. The preview draws the clips you add.

Step 4: Wood and finish

“Select Your Wood Type”

  • Baltic Birch (Our Standard), $0, the default. A stable, void free multi ply panel that ships finished.
  • (Select) Hard Maple, $43.99. Hard Maple (Select Grade) is a dense, tight grained solid hardwood for drawers on display.

The wood sets the bottom list in step 6, and the preview recolors the box. Compare Baltic Birch and Hard Maple.

“Wood Finish”: Hard Maple (Select Grade) only

This field appears when you choose (Select) Hard Maple: Unfinished (the default) or Finished, both $0. Baltic Birch always ships finished. The preview shows the sheen.

Step 5: Drawer front and scoop

“Drawer Front Type”

  • Standard Drawer, $0, the default. A straight front for a drawer front to screw onto, the usual U shaped drawer.
  • Scoop Front, $10.99. A hand hold cut into the top edge, for a box that runs behind cabinet doors.

“Scoop Style”: 55 profiles at no charge

This field appears when you choose Scoop Front. All 55 profiles are $0 standard cuts with no setup fee: OG ogee, CR crescent, SU shallow U, DU deep round U, CL cloud lift, and SP oval and keyhole. The default is OG1 Standard ogee (our standard). Every code is drawn in our scoop gallery, and the preview draws the one you pick.

Step 6: Sides and bottom

“Drawer Side Thickness”

  • 5/8" Thick Drawer Sides (Our Standard), $0, the default, and the right wall for most undermount runners.
  • 1/2" Thick Drawer Sides (Thin), $6.99. Gains 1/4 in of inside width and depth; on Blum TANDEM the width rule becomes the opening minus 5/8 in.
  • 3/4" Thick Drawer Sides (Thick), $19.99. The stiffest box, fine on side mount. On undermount, only runners built for a 19 mm side take it: the 19 mm Grass Dynapro and Blum TANDEM (563F), Würth PRO634 and Salice Futura Smove A7955.

Outside sizes never change with side thickness, and the preview shows the walls. More on drawer side thickness.

“Drawer Bottom Thickness/Wood Type”

One of two lists appears, set by your wood. Every bottom sits in a groove on all four sides and is cut to follow the notch; a 1/2 in bottom costs 1/4 in of inside height.

BottomBaltic Birch boxHard Maple (Select Grade) box
1/4″ Thick Baltic Birch BottomDefault (Our Standard), $0$0
1/2″ Thick Baltic Birch Bottom$11.99$7.99
1/4″ Thick Hard Maple(Select) BottomNot offeredDefault, $0
1/2″ Thick Hard Maple(Select) BottomNot offered$11.99
1/4″ Thick White Melamine Bottom$0$0
1/2″ Thick White Melamine Bottom$4.99$4.99
1/4″ Thick Black Melamine Bottom$0$0
1/2″ Thick Black Melamine Bottom$4.99$4.99
1/4″ Thick HardRock Maple Melamine Bottom$0$0
1/2″ Thick HardRock Maple Melamine Bottom$4.99$4.99

Melamine wipes clean; a 1/2 in bottom is stiffer for a wide, loaded drawer. The preview shows the material. More on drawer bottom options.

Check your build in the live 3D preview

The live 3D preview under the product photos redraws on every choice, to the 1/32 in, with a one line spec summary under it. On a phone, a bar at the bottom shows the live price and a Preview button that opens the drawing over the page.

  • Views and Dimensions. 3D, Top, Front and Back buttons, a box you can drag to turn, and a Dimensions toggle whose callouts never cover the drawer.
  • Top view. Lays out the left leg, notch, right leg, distance to center, front to notch and notch depth like a shop drawing, with notch width and front to notch in red. The legs plus the notch width should equal W; front to notch plus notch depth, D.
  • Show plumbing. Runs a drain and P trap through the notch.
  • Example notch. Until all three numbers are entered, the preview draws an example notch and says so.
  • Depth carries over. When your slide choice in step 3 changes the depth list, the depth you already chose is kept when that length exists.

Red warnings flag four mistakes. While one shows, the Add to cart button is greyed out with a message under it, so a notch that runs past a side cannot be ordered. Fix each:

  • A leg is under 3 in. Check that A is measured from the box, not the cabinet, or trim B. If the plumbing truly hugs a side, a U shaped drawer will not fit; see our under sink pull out drawers.
  • The notch starts less than 3 in from the front. Measure C again from the box front line, not the doors. If a pipe really sits that far forward, ask us before you order.
  • The notch reaches less than 3 in into the box. D minus C is under 3 in, often because C was measured to the back wall. If the plumbing really sits that far back, a shorter plain custom drawer box may clear it.
  • The notch runs past a side. A plus or minus half of B falls outside the box, usually a typo such as 1.75 for 17.5.

Worked examples with exact totals

Three builds from the live price tables: the $58.99 base plus every choice that costs something; everything else is a $0 default.

Example 1Example 2Example 3
SITUATION36 in frameless sink base, centered drain33 in frameless sink base, side mount30 in frameless vanity, off center drain
BOX W x D x H34 3/32 x 21 x 7 in30 1/2 x 21 x 6 in28 3/32 x 18 x 5 in
OPENING34 1/2 in, minus 13/3231 1/2 in, minus 128 1/2 in, minus 13/32
NOTCH A, B, C17 1/16, 12, 9 in (centered)YoursYours, off center
BASE$58.99$58.99$58.99
WIDTH34″ Dovetail Drawer Box plus 3/32, $86.9930″ Dovetail Drawer Box plus 1/2, $59.9928″ Dovetail Drawer Box plus 3/32, $56.99
HEIGHT7″ Inches (H), $34.996″ Inches (H), $23.995″ Inches (H), $19.99
DEPTH21” Inches (D), $9.9921″ Inches (D), $11.9918” Inches (D), $9.99
U NOTCH$74.99$74.99$74.99
SLIDE PREPBlum TANDEM plus BLUMOTION 563, $0None, $0Blum MOVENTO 763, $0
CLIPSNo Clips, $0No clips fieldBlum T51.7601 Clips, $6.99
WOODBaltic Birch (Our Standard), $0Baltic Birch (Our Standard), $0(Select) Hard Maple, $43.99
BOTTOM1/4″ Thick Baltic Birch Bottom (Our Standard), $01/2″ Thick Baltic Birch Bottom, $11.991/4″ Thick Hard Maple(Select) Bottom, $0
TOTAL$265.95$241.94$271.93

Example 1 is the 36 in sink base worked out in step 2, with a 12 in deep notch and legs of 11 1/16 and 11 1/32 in. Each box is its opening minus the slide deduction, and notch numbers never change the price.

Which options to pick, by situation

  • New kitchen, centered drain, 30 to 36 in sink base. Blum TANDEM plus BLUMOTION 563 at 21 in, 5/8 in sides, Baltic Birch, clips added. Blum rates the 563 at 100 lb static and 90 lb dynamic.
  • Slides you already own. Side mount: leave “Notching” at None. Undermount: pick that exact model, and add clips unless you have a set.
  • A heavy load of bottles and cleaners. Blum MOVENTO 763, rated 125 lb by Blum, and a 1/2 in bottom.
  • Under a sink. 1/2″ Thick White Melamine Bottom, $4.99, gives a stiff floor that wipes clean.
  • Hard Maple (Select Grade), $43.99. Worth it when the open drawer is on display or must match maple drawers; choose Finished under a sink. Otherwise Baltic Birch, which ships finished.
  • Valves or a filter in the path of the legs. An 18 in runner, so the legs stop 3 in further forward, a lower box, or a wider notch.
  • Plumbing within 3 in of a side. A U shaped drawer will not work; compare sink base storage options.
  • An L shape, a partial height notch or two notches. Use the instant quote.

After you order

  • We check your three numbers against your box size before we cut, and contact you if they do not add up.
  • We build the box to order in our Las Vegas, Nevada shop, cut to the 1/32 inch and shipped assembled. Built in USA. We do not promise a lead time for U shaped builds.
  • Retail shipping is free, with tracking emailed when the label prints. Slides are sold separately in our shop.
  • Lifetime warranty on the wood box; 1 year on hardware such as clips.
  • Built to your measurements, so not returnable, and there is no fit guarantee. If we built it wrong or it is defective, send photos and we remake it; shipping damage reported within 7 days with photos is replaced or refunded. See shipping.

U shaped sink drawer configurator questions

How much does a U shaped sink drawer cost?

A U shaped sink drawer starts from a $58.99 base, plus $74.99 for the full height rectangular notch on every box; size, wood, bottom, clips and runner length add from there. For a frameless 36 in sink base, a 34 3/32 x 21 x 7 in Baltic Birch box notched for Blum TANDEM with a centered 12 in notch is $265.95.

What are the three notch numbers on a U shaped drawer?

Distance to notch center runs from the left outside edge of the box to the middle of the notch. Notch width is the open space between the notch walls. Distance from the front to the notch runs from the front outside face of the box to where the notch opening starts. Notch depth is box depth minus that.

Do I measure the notch center from the cabinet or from the box?

From the box: its left outside edge to the middle of the notch. Measure the plumbing from the left cabinet side, find its center, then subtract the slide clearance on the left: 1/2 in for side mount slides, or 13/64 in for Blum TANDEM 563 with 5/8 in sides.

How close can the notch be to the side or front of the drawer?

At least 3 in of drawer must stay on each side of the notch and in front of it, and the notch must reach at least 3 in into the box. The live preview shows a red warning when any rule is broken.

Can the notch be off center?

Yes. The distance to notch center places the notch anywhere side to side, so an off center drain just gives two legs of different widths, each at least 3 in. Measure the plumbing’s left and right edges, not the drain center, because a trap usually swings to one side.

Can I return a U shaped drawer if it does not fit?

No. A U shaped drawer is built to your measurements, so it is not returnable, and there is no fit guarantee. We check your three numbers before we cut; if we built it wrong or it is defective, send photos and we remake it.

Can I order an L shaped or two notch sink drawer?

Not in the configurator, which cuts one full height rectangular notch, open at the back. L shapes, partial height notches and two notches go through our instant quote, where you describe your plumbing and the layout you need.

Your three numbers, cut to the 1/32 inch

Enter your box size, three notch numbers and slide, clear any red warnings in the Top view, and we build a dovetail U shaped sink drawer that wraps your plumbing. Still measuring? Start with how to measure plumbing for a U shaped drawer.