Custom drawer boxes for Blum undermount slides: 563 Tandem and Movento

Blum undermount runners are the hardware most cabinet shops spec, and the most particular about the drawer box under them. Width, height, bottom recess, the rear notch, the hook holes and the locking device pre-bore all have to match Blum’s drawing before the drawer will seat. This guide lays out every one of those numbers for TANDEM plus BLUMOTION 563 (and the retired 569) and MOVENTO 763 and 769, straight from Blum’s installation documents, then shows exactly what to pick in our configurator so the box arrives cut for your runner and, if you want, with the locking devices already pressed on.

Which Blum runner do you have?

The model number is printed on the runner. The letter after the number tells you which cabinets and side thicknesses it is built for, and that letter decides the box.

Runner	Drawer sides	Cabinet	Lengths	Load (static / dynamic)
TANDEM 563H	1/2 in to 5/8 in (13 to 16 mm)	Face frame with rear bracket, or frameless	9, 12, 15, 18, 21 in	100 lb / 90 lb
TANDEM 563F	5/8 in to 3/4 in (16 to 19 mm)	Face frame with rear bracket, or frameless	9, 12, 15, 18, 21 in	100 lb / 90 lb
TANDEM 563. (“563 dot”)	1/2 in to 5/8 in	Frameless or blocked out only, no rear brackets	18, 21 in	100 lb
TANDEM 569	Retired heavy duty runner, replaced by MOVENTO 769. Blum’s 563 installation sheet covers 563/569 together, so the box, notch and hook hole in this guide apply; take the rating and lengths from the sheet packed with your runner.
MOVENTO 763H	1/2 in to 5/8 in	Face frame with rear bracket, or frameless	12, 15, 18, 21 in	125 lb static
MOVENTO 763.	1/2 in to 5/8 in	Frameless or blocked out only	12, 15, 18, 21 in	125 lb static
MOVENTO 769.	1/2 in to 5/8 in	Blocked out only	18, 21, 24, 27, 30 in	170 lb static
MOVENTO 769R	1/2 in to 5/8 in	Bottom mount heavy duty set	21 in	135 lb static

Two things worth knowing. Blum’s current TANDEM catalog lists standard duty only; the 569 heavy duty series is discontinued and distributors point 569 buyers at MOVENTO 769, so a 569 box is built exactly like a 563 box and the runner you buy new will be a 769. And there is no “563A” runner in Blum’s US program.

Minimum inside cabinet depth

The runner needs room behind the drawer. Blum’s minimums, measured inside the cabinet from the back of the face frame or the front edge of a frameless side:

Runner length	563H / 563F / 763H	563.	763.	769.
9 in (229 mm)	10 15/32 in (266 mm)
12 in (305 mm)	12 29/32 in (328 mm)		12 13/16 in (325 mm)
15 in (381 mm)	15 29/32 in (404 mm)		15 25/32 in (401 mm)
18 in (457 mm)	18 29/32 in (480 mm)	18 29/32 in (480 mm)	18 25/32 in (477 mm)	18 25/32 in (477 mm)
21 in (533 mm)	21 15/16 in (557 mm)	21 15/16 in (557 mm)	21 13/16 in (553 mm)	21 13/16 in (553 mm)
24 / 27 / 30 in				24 13/16 / 27 13/16 / 30 13/16 in (630 / 706 / 782 mm)

With a rear mounting bracket on a 563H, 563F or 763H the cabinet can be deeper: Blum’s maximum with the bracket is about 1 11/16 in (42 mm) more than the minimum at each length.

The drawer box, dimension by dimension

Blum specifies the drawer by its inside width and leaves the outside to the side thickness. We build to the outside width you enter, so the table below does that math for you. Everything here comes from Blum’s 563H, 563F and MOVENTO installation documents; the sources are listed at the end.

Dimension	TANDEM 563H, 563., 569	TANDEM 563F	MOVENTO 763, 769
INSIDE DRAWER WIDTH	opening minus 42 mm (1 21/32 in)	opening minus 49 mm (1 15/16 in)	opening minus 42 mm (1 21/32 in)
OUTSIDE WIDTH, 5/8 IN SIDES	opening minus 10 mm (13/32 in)	opening minus 17 mm (21/32 in)	opening minus 10 mm (13/32 in)
OUTSIDE WIDTH, 1/2 IN SIDES	opening minus 16 mm (5/8 in)	not rated for 1/2 in sides	opening minus 16 mm (5/8 in)
OUTSIDE WIDTH, 3/4 IN SIDES	not rated for 3/4 in sides	opening minus 11 mm (7/16 in)	not rated for 3/4 in sides
SIDE THICKNESS	1/2 in to 5/8 in	5/8 in to 3/4 in	1/2 in to 5/8 in
BOTTOM RECESS	13 mm (1/2 in) from bottom edge of side to underside of bottom	13 mm (1/2 in)	13 mm (1/2 in)
MAX DRAWER HEIGHT	opening height minus 20 mm (25/32 in)	opening minus 20 mm (25/32 in)	opening height minus 23 mm (29/32 in)
CLEARANCE UNDER THE BOX	14 mm (9/16 in)	14 mm (9/16 in)	16 mm (5/8 in)
MIN CLEARANCE ABOVE	6 mm (1/4 in)	6 mm (1/4 in)	7 mm (9/32 in)
REAR NOTCH, EACH BOTTOM CORNER	35 mm (1 3/8 in) wide minimum, 13 mm (1/2 in) tall	35 mm x 13 mm	50 mm (1 15/16 in) wide minimum, 13 mm tall; 125 mm (4 15/16 in) with TIP-ON BLUMOTION
REAR HOOK HOLE	6 mm diameter, 10 mm (13/32 in) deep, one per side, into the rear face of the back: 7 mm (9/32 in) in from the inside face of the drawer side, 11 mm (7/16 in) above the underside of the bottom
LOCKING DEVICE PRE-BORE	two holes per device, 2.5 mm diameter, 10 mm deep, drilled at 75 degrees into the front corner of the box using Blum’s T65.1600.01 template; device fits flush to the drawer bottom
FRONT GAP	1.5 mm (1/16 in) between drawer front and cabinet

Blum’s worked example is useful for checking your own math: a 21 in opening with 5/8 in sides gives a 20 19/32 in wide box on a 563H or MOVENTO, and 20 9/16 in on a 563F with 3/4 in sides. Blum publishes only the recess, not a bottom thickness, so our standard 1/4 in bottom and the optional 1/2 in bottom both work; the recess is cut to 13 mm either way.

Blum gives an alternative to notching: make the back panel shorter and run the drawer bottom out to the back of the box. We notch, because it keeps the bottom captured on all four sides. Either way the runner’s rear hook lands in the same place.

Locking devices: which clip does what

The locking device is the plastic or steel clip that presses into the front bottom corner of the box and grabs the runner. It is also where the adjustments live. TANDEM devices only fit TANDEM runners and MOVENTO devices only fit MOVENTO. The pre-bore differs too: MOVENTO’s holes sit 23 mm along the side from the front corner, TANDEM’s sit 32 mm, so a box drilled for one runner’s pre-bore is mis-drilled for the other’s clip.

Part (left and right)	Runner	Adjustments	Min inside width	When to use it
T51.1901	563, 569	Height +3 mm (1/8 in), side +/-1.5 mm (1/16 in)	6 11/16 in (170 mm)	The standard device. This is the “Blum T51.1901 Clips” option in our configurator.
T51.1901.20	563, 569	Height, side	6 11/16 in	Vertical mount version for 5/8 in or thicker sub fronts, reduces sub front splitting.
T51.1901.PS	563, 569	Height, side, depth +2.5 mm (3/32 in) out; built in 3 mm bumper	6 11/16 in	Inset drawer fronts and anything that needs the front dialed in and out. Sold by distributors as the “inset” or “3 way” device; needs a 1/2 in or thicker sub front.
T51.1801	563, 569	Height only, no side adjustment	4 7/8 in (124 mm)	The basic, no adjustment device, and the one that fits drawers too narrow for the T51.1901.
T51.1801.20	563, 569	Height only	4 7/8 in	Vertical mount version of the basic device.
T51.0801.20	563, 569	Height +3 mm	3 3/4 in to 4 7/8 in (95 to 124 mm)	Narrow drawers: spice pull outs, tray dividers. Two piece nylon, 25 lb dynamic limit, 5/8 in sub front minimum.
T51.7601	MOVENTO	Side +/-1.5 mm, height +3 mm	6 11/16 in	The standard MOVENTO device. This is the “Blum T51.7601 Clips” option in our configurator.
T51.7601.20	MOVENTO	Side, height	6 11/16 in	Vertical mount version for 5/8 in or thicker sub fronts.
T51.0501.20	MOVENTO	Height only	3 3/4 in (95 mm)	Narrow MOVENTO drawers, 25 lb dynamic limit.
298.7600	MOVENTO	Depth +/-2 mm (3/32 in), clips onto the T51.7601		Front in and out adjustment for MOVENTO. Not for use with TIP-ON BLUMOTION.
T59.K010M	MOVENTO	Spacer		Required on 15/32 in and 1/2 in sub fronts, or drop the runner 3 mm instead.

Tilt is not on the clip. Blum puts tilt (up to 5 mm of rise at the back of the drawer) and a second side adjustment on the rear of the runner itself, so every 563 and MOVENTO drawer has some tilt correction available regardless of which device is on the front. There is no Blum part called “T51.1901.INS” and no “3D” TANDEM device; the inset job is done by the T51.1901.PS plus a different runner setback, covered below.

Reading other suppliers’ option names

Drawer box order forms tend to describe Blum clips in words rather than part numbers. Here is what those phrases mean in Blum’s catalog, so you can order the same thing from us by part number.

Order form phrase	Blum part	What you get
Blum 563, notch only	none	Notched and drilled for 563, no clips. Press on your own.
Blum 563 with standard clips, no adjustments	T51.1801	Basic device, height only.
Blum 563 with standard locking devices	T51.1901	Height and side adjustment. Our configurator’s T51.1901 option.
Blum 563 with inset locking devices	T51.1901.PS	Adds depth adjustment for inset fronts.
Blum 563 with narrow locking devices	T51.0801.20	For inside widths of 3 3/4 in to 4 7/8 in.
Blum MOVENTO, notch only	none	Notched and drilled for MOVENTO, no clips.
Blum MOVENTO with locking device	T51.7601	Side and height adjustment. Our configurator’s T51.7601 option.

Rear brackets, inset fronts and TIP-ON

Face frame cabinets. Only the H and F runners (563H, 563F, 763H) take a rear bracket. Blum’s screw on steel bracket is 295.3750, the nylon sockets are 295.6400 (screw on) and 295.6410 (plug in, 8 mm dowels, 6 mm minimum back panel), and 295.3550 is the narrow bracket rated to 45 lb dynamic. The dot runners (563., 763., 769.) must be mounted on a blocked out cabinet side; Blum says plainly that rear brackets and sockets cannot be used with them. The bracket does not change the box.

Inset drawer fronts. The runner moves back, the box does not change. For a 563H or 563. the runner setback is the sub front thickness plus the front thickness minus 11.5 mm (7/16 in) for a flush front, or minus 9 mm (11/32 in) when you use the T51.1901.PS and dial the front out. For a 563F the figures are 14.5 mm (9/16 in) and 12 mm (15/32 in). For MOVENTO the setback is sub front plus front minus 13 mm (1/2 in), and 6.5 mm less again with the 298.7600 depth adjuster. Minimum inside cabinet depth grows by the setback plus 6 mm (1/4 in).

TIP-ON BLUMOTION (push to open with soft close) is a MOVENTO feature in Blum’s US program. It changes the box: the rear notches widen to 125 mm (4 15/16 in) minimum to clear the units, the minimum inside drawer width becomes 11 1/16 in (281 mm), rear brackets and the 298.7600 adjuster cannot be used, and Blum says do not fit bumpers. The unit is picked by drawer length and load (S1 for 12 in drawers, L1 and L3 for 15 to 21 in, L5 for 18 to 30 in) and the synchronization rod is cut to the opening width minus 267 mm (10 1/2 in). TANDEM 563 with BLUMOTION has no TIP-ON option; the Würth TIP-ON kit for TANDEM fits only the older 562 runners without BLUMOTION. If you want touch to open on a wood drawer box, plan on MOVENTO and tell us it is TIP-ON so the wider notch is cut.

How to order a Blum ready box from Gritly

On the custom drawer box, the notching is a set of dropdowns. Here is the order to fill them in.

Replacing one drawer on runners you already own? The Blum Tandem replacement guide and the Blum Movento replacement guide cover measuring the old box. Installing for the first time, read how to install undermount drawer slides and how to adjust the front. Every other undermount brand we notch for is on the undermount slide guide.

Blum undermount questions

What width do I order for a Blum 563 box?

Blum’s rule is inside drawer width equals the cabinet opening minus 42 mm (1 21/32 in). With our standard 5/8 in sides that is an outside width of the opening minus 13/32 in; with 1/2 in sides, minus 5/8 in. A 563F with 3/4 in sides is the opening minus 7/16 in. Enter that outside number and we cut it to the 1/32 in.

Does the same box fit TANDEM 563 and MOVENTO?

Almost, but not quite. Width, recess and hook holes are identical, but the locking device pre-bore is not: MOVENTO’s holes sit 23 mm along the side from the front corner, TANDEM’s sit 32 mm. MOVENTO also wants a wider rear notch (50 mm instead of 35 mm) and 3 mm more height clearance. A box cut to the MOVENTO notch, height rule and pre-bore clears a TANDEM runner too, so if you are undecided, order it as MOVENTO and use MOVENTO’s own locking devices. The locking devices themselves are never interchangeable.

Which locking device do I need?

Most drawers: T51.1901 for TANDEM or T51.7601 for MOVENTO, both with side and height adjustment. Inset fronts: T51.1901.PS on TANDEM, or T51.7601 plus the 298.7600 depth adjuster on MOVENTO. Drawers narrower than 6 11/16 in inside: T51.1801 down to 4 7/8 in, then the narrow T51.0801.20 (TANDEM) or T51.0501.20 (MOVENTO) down to 3 3/4 in.

Can I use a rear bracket with a 563. or 763. runner?

No. Blum’s dot runners are for frameless or blocked out cabinets only; rear brackets and sockets fit the H and F runners. If you have a face frame cabinet and want a bracket, buy the 563H, 563F or 763H.

My runner says 569. What do I order?

Order the box as Blum TANDEM 563. The 569 uses the same box, notch, hook holes, pre-bore and T51.1901 devices; it is a heavier duty runner, not a different drawer. The 569 series is discontinued, so if you also need new runners the current equivalent is MOVENTO 769, which takes a MOVENTO box.

Do you drill the locking device holes?

Yes. The 2.5 mm, 10 mm deep holes at 75 degrees are part of the notch and drill prep, cut to Blum’s template, so the devices press straight on whether we install them or you do.

Price one now

Configure a custom drawer box with Blum prep and watch the price update as you pick options. True dovetail joinery in Baltic Birch or Hard Maple (Select Grade), built in our Las Vegas shop. Prefer to type your sizes? The instant quote prices your whole list at once. Cabinet shops order at tier pricing through the trade portal.

Sources

Dimensions and part numbers in this guide are taken from Blum’s own documents: the TANDEM 563H installation instructions, the 563F installation instructions, the TANDEM plus BLUMOTION brochure (2022), the MOVENTO brochure (2019), the TIP-ON BLUMOTION for MOVENTO instructions and the 298.7600 depth adjuster sheet, plus Blum’s TANDEM and MOVENTO assembly pages. Blum publishes static loads for MOVENTO and no dynamic figure; the 569 discontinuation and the 769 replacement come from distributor listings, not from Blum. Check the drawing for your exact runner before cutting anything yourself.