Notched drawer boxes
Drawer box for Salice Progressa and Progressa+: sizes, notch and hook holes
Progressa and Progressa+ are Salice’s synchronized undermount runners, built for a wider rear notch and a higher weight rating than Salice’s own Futura line. Salice publishes one drawer prep for both, so this page covers them together, with the manufacturer’s numbers and the configurator picks for each.
Quick answer. A Salice Progressa or Progressa+ box needs 1/2 to 5/8 in sides, an inside width of opening minus 42 mm (1 21/32 in), a length equal to the runner’s nominal length, and a 50 mm (2 in) minimum rear notch with a 6 mm hook hole, widening to 76.2 mm (3 in) with the Push synchronizer or a tilt lever. A Progressa box is a Progressa+ box; Salice heads its drawer prep pages “for all Progressa and Progressa+ slides.” Tell us your exact model and we match it.
Ready to build it? The configurator cuts this notch free once you pick Salice Progressa or Progressa+.
Progressa vs Progressa+
| Runner | Part number pattern | Lengths | Load, static / dynamic |
|---|---|---|---|
| Progressa | G5U6S or G5U6P, plus length and member code (example G5U6S381XXF6) | 9, 12, 15, 18, 21 in | 120 lb / 100 lb |
| Progressa+ | G7U6S or G7U6P | 15, 18, 21, 24, 27, 30 in | 170 lb static (Salice prints more than one dynamic figure; we quote the static rating) |
Both are full extension, with Smove oil damper soft close or a Push to open version. The 5 or 7 in the part number is the only real difference: Progressa+ is the same runner rated higher, and its 24, 27 and 30 in lengths use a shorter “C” cabinet member that needs frameless or blocked out sides, with no rear socket. U6 in the part number is the 1/2 to 5/8 in side version covered on this page; a 19 mm, U9 version exists in Salice’s catalog for 3/4 in sides, but Gritly’s confirmed 3/4 in side option applies only to Grass Dynapro 19, Würth PRO634, Blum 563F and Salice Futura Smove A7955, so a Progressa box here is built at 1/2 or 5/8 in sides.
The drawer box, dimension by dimension
| Dimension | Spec |
|---|---|
| SIDE THICKNESS | 1/2 to 5/8 in (13 to 16 mm) |
| INSIDE DRAWER WIDTH | opening minus 42 mm (1 21/32 in), tolerance +0 / -1.5 mm |
| OUTSIDE WIDTH, 5/8 IN SIDES | opening minus 10 mm (13/32 in) |
| OUTSIDE WIDTH, 1/2 IN SIDES | opening minus 16 mm (5/8 in) |
| BOX LENGTH | equal to the runner’s nominal length (the runner itself runs about 9 to 11 mm longer) |
| BOTTOM RECESS | 13 mm (1/2 in) maximum |
| MAX SIDE HEIGHT | opening minus 21 mm (13/16 in); keep at least 6 mm clear above the side |
| REAR NOTCH, EACH BOTTOM CORNER | 50 mm (2 in) minimum wide, height equal to the recess, up to 13 mm. 76.2 mm (3 in) with the Push synchronizer or a tilt lever. |
| REAR HOOK HOLE | 6 mm (1/4 in) diameter, 10 mm deep, 7 mm (9/32 in) in from the inside face of the side, 11 mm (7/16 in) above the top of the notch |
| FRONT CLIP PRE-DRILL | 2.5 mm (3/32 in) holes per the clip’s own template, #6 x 5/8 in screws into the bottom or the front |
These numbers are from Salice’s US Progressa technical information and the Progressa+ Smove data sheet. Salice does not publish a drawer bottom thickness; our standard 1/4 in and optional 1/2 in bottoms both sit inside the 13 mm recess.
Minimum inside cabinet depth
| Runner length | No socket | Metal rear socket |
|---|---|---|
| 9 in | 10 5/8 in (270 mm) | not offered |
| 12 in | 12 3/4 in (323 mm) | 12 13/16 in (326 mm) |
| 15 in | 15 3/4 in (399 mm) | 15 13/16 in (402 mm) |
| 18 in | 18 11/16 in (475 mm) | 18 13/16 in (478 mm) |
| 21 in | 21 11/16 in (551 mm) | 21 13/16 in (554 mm) |
| 24 / 27 / 30 in (Progressa+) | 24 11/16 / 27 11/16 / 30 11/16 in (627 / 703 / 779 mm), blocked out only | not offered |
Salice does not recommend rear sockets above 75 lb, so most Progressa and Progressa+ installations screw the cabinet member directly to a face frame or a filler rather than relying on a socket.
About the Progressa slide
Progressa and Progressa+ are synchronized full extension runners, meaning both sides move together through a rack and pinion action rather than two independent channels. Smove is Salice’s oil damper soft close; Push is the push to open version, which needs the wider 76.2 mm notch for its synchronizer. To identify one, pull the drawer and read the part number printed on the runner: a “G5” prefix is Progressa, “G7” is Progressa+, and “U6” after it means the 1/2 to 5/8 in side version this page covers.
Clips: do we install one, do we sell one?
Salice AFCGXX3B Locking Clips on our configurator adds the standard mount pair for $5.99, installed before shipping. AFCGXX3B adjusts 1.5 mm side to side and 3 mm in depth at the clip; height adjustment of 2.5 mm comes from a lever on the runner itself, not the clip.
| Part | Mount | Adjustment | Notes |
|---|---|---|---|
| AFCGXX3B | Standard | Side +/-1.5 mm, depth +/-3 mm, height +2.5 mm via the runner lever | Installed for $5.99 with this configurator option |
| AFCGX43B | Vertical | Same as AFCGXX3B | Needs a 1/2 in sub front |
| AFCEX56B | Standard, fixed | Height on the runner only, no side or depth adjustment | Down to 5 1/8 in inside width |
| AFCEX43B | Narrow | None on the clip | 13 mm sub front, 6 in minimum inside width |
We do not stock Salice runners or clips for separate sale. For AFCGX43B, AFCEX56B, AFCEX43B or the AFSFXXB sub front spacer, choose No Clips and put the part number in your order notes; we drill for it before cutting.
Lengths and depths we build
Depth has to equal the runner’s nominal length exactly. Progressa stops at 21 in; Progressa+ starts at 15 in and runs to 30 in. Prices below are current as of October 2026.
| Depth | Runner | Extra |
|---|---|---|
| 9 in | Progressa | included |
| 12 in | Progressa | included |
| 15 in | Progressa, Progressa+ | +$7.99 |
| 18 in | Progressa, Progressa+ | +$7.99 |
| 21 in | Progressa, Progressa+ | +$7.99 |
| 24 in | Progressa+ | +$9.99 |
| 27 in | Progressa+ | +$12.99 |
| 30 in | Progressa+ | +$14.99 |
A worked example
Say your cabinet opening is 21 in wide, the runner reads “G5U6S,” and you want our standard 5/8 in sides. Outside width is 21 in minus 10 mm (13/32 in), which is 20 19/32 in. Depth matches the 21 in runner exactly. The opening is 12 in tall, so an 11 1/8 in box height stays under the opening minus 13/16 in rule. On the configurator: Notching “Notched & Drilled For Undermount Slides,” Slide Brand/Model “Salice Progressa,” Clips “Salice AFCGXX3B Locking Clips,” Depth Selection “21” Inches (D),” width 20 19/32 in, height 11 1/8 in. For a Progressa+ runner in 24 to 30 in, pick “Salice Progressa+” instead; the box math is identical.
Keep your slides or replace them?
Keep the runners if the synchronized action still moves freely and the soft close or Push still catches. Progressa and Progressa+ are built to outlast the boxes that usually ride on them. Replace a pair only if a runner binds, the damper has failed, or you are upgrading to Progressa+ for the higher rating, in which case the box prep stays the same.
Measure in three steps: read the part number off the runner, measure the old box to the 1/32 in if you still have it, or measure the cabinet opening and runner length if you do not. The full steps are in how to measure, and how to install undermount drawer slides covers dropping the new box on.
Common mistakes
- Ordering the standard 35 mm undermount notch for Progressa. Progressa needs 50 mm minimum; a 35 mm notch is too narrow for the runner’s rear hardware.
- Ordering a Push to open runner without the wider notch. Push needs 76.2 mm (3 in), not the 50 mm standard figure.
- Mixing Futura and Progressa clips. AFCGXX3B is a Progressa part; Futura uses A750.010. They are not interchangeable.
- Assuming 3/4 in sides are available on Progressa through Gritly. Our confirmed 3/4 in option covers only Dynapro 19, PRO634, Blum 563F and Salice A7955; Progressa ships at 1/2 or 5/8 in sides.
How to order a Progressa box from Gritly
1. Notching
Choose Notched & Drilled For Undermount Slides. The notch and drilling are free.
2. Slide brand and model
Choose Salice Progressa or Salice Progressa+. For a Push to open runner, add “Push synchronizer” in your order notes so the wider notch is cut.
3. Clips
Salice AFCGXX3B Locking Clips adds the standard pair for $5.99. For AFCGX43B, AFCEX56B or AFCEX43B, choose No Clips and note the part number.
4. Depth
Match the runner length exactly: 9 to 21 in for Progressa, 15 to 30 in for Progressa+.
5. Width
Enter the outside width: opening minus 13/32 in with 5/8 in sides, minus 5/8 in with 1/2 in sides.
6. Height and bottom
Stay under the opening minus 13/16 in. The bottom recess is cut to 1/2 in with either the 1/4 in or the 1/2 in bottom.
Technical sources
- Salice: Progressa technical information, salice.com. Revision: not stated.
- Salice: Progressa+ Smove data sheet, salice.com. Revision: not stated.
Figures on this page were checked against these documents in October 2026. Our shop’s own rules (the 1 in side mount deduction, the cut list limits) come from how we build.
Questions
Is a Salice Progressa drawer box the same as a Progressa+ box?
Yes. Salice publishes one drawer prep and one set of clips for both. Progressa+ is the same runner rated higher, with 24, 27 and 30 in lengths that need blocked out cabinet sides.
What does clips adj mean on a Salice drawer order?
Adjustable clips: the AFCGXX3B, with side and depth adjustment at the clip and height adjustment on the runner lever. “Clips no adj” is the AFCEX56B, which has no side or depth adjustment at all.
Do I need a wider notch for Salice Push to open?
Yes. The Push synchronizer sits in the notch area, so Salice widens the notch to 76.2 mm (3 in) on Progressa, up from the 50 mm standard figure. Tell us in the order notes.
Can I use rear sockets on a Salice Progressa+?
Not on the 24 to 30 in runners, which need blocked out sides, and Salice does not recommend sockets for any load above 75 lb. A face frame cabinet carrying real weight should get a filler and a direct screw instead.
Can I order a Progressa box with 3/4 in sides?
Not through Gritly today. Our confirmed 3/4 in side option is limited to Grass Dynapro 19, Würth PRO634, Blum 563F and Salice Futura Smove A7955. A Progressa box here is built at 1/2 or 5/8 in sides.
Related reading
- Notched drawer boxes: every model we notch for.
- Salice Futura Smove A7555 and A7955: the narrower notch, lighter rated sibling line.
- Salice undermount drawer boxes: the full brand guide.
- How to install undermount drawer slides.
Cut to your exact Progressa
Enter your outside width, match the depth to the runner, and the notch and hook hole come out right. Dovetailed, cut to the 1/32 in, built in our Las Vegas shop.