Würth PRO500
Drawer box for Würth PRO500: sizes, notch and hook holes
Würth’s PRO500 is the entry level runner in the PRO undermount line, sold through Würth Louis and Company, Würth Baer and other Würth branches, with its front locking devices already in the box. This page is for anyone ordering a dovetail box to run on PRO500, whether you are replacing a worn box or fitting new runners.
Quick answer. A Würth PRO500 box needs sides up to 5/8 in thick, an inside width of opening minus 1 21/32 in, a length equal to the slide length, and a 1 5/16 in by 1/2 in rear notch with a 1/4 in hook hole. Würth publishes the spec; tell us your exact model and we match it. The outside width works out to opening minus 13/32 in (10 mm, often written 3/8 in) with our standard 5/8 in sides, or opening minus 5/8 in with 1/2 in sides, cut to the 1/32 in. PRO500 ships with its own front locking device already in the box, so the $5.99 clip charge is for pressing that device on, not a separately sold part.
The PRO500 drawer box, dimension by dimension
| Dimension | Würth PRO500 |
|---|---|
| INSIDE DRAWER WIDTH | opening minus 42 mm (1 21/32 in) |
| 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) |
| SIDE THICKNESS | up to 16 mm (5/8 in) |
| BOX LENGTH | equal to the nominal slide length |
| BOTTOM RECESS | 1/2 in (13 mm) maximum |
| MIN TOP CLEARANCE | about 1/4 in (6 mm) |
| REAR NOTCH, EACH BOTTOM CORNER | 1 5/16 in (33 mm) wide by 1/2 in (13 mm) tall, maximum |
| REAR HOOK HOLE | 1/4 in (6 mm) diameter, 3/8 in (10 mm) deep, centered 9/32 in (7 mm) in from the side and 7/16 in (11 mm) above the notch |
| LENGTHS | 12, 15, 18, 21 in (some Würth branches also list 9 in) |
| LOAD, PER WÜRTH | one Würth listing gives 75 lb dynamic (100 lb static); the installation drawing instead marks it 25 kg, about 55 lb. We note both because Würth’s own documents disagree. |
| REAR BRACKETS | included (GHJ06, OGA03, GHJ02) |
Our configurator offers PRO500 depths of 12, 15, 18 and 21 in; we have not confirmed a 9 in Gritly box against this runner, even though a 9 in PRO500 appears on some Würth price lists, so tell us if you need a 9 in box for it and we check the fit before cutting.
About the PRO500 runner
PRO500 is a full extension, soft close concealed undermount runner, built for Würth by Dongtai (DTC) under the model S20DD533H. It is Würth’s value tier undermount runner, a step below PRO600 in price, and it ships with its front locking devices and rear brackets already in the box, which is unusual among the runners on this page. Würth sells no push to open version of PRO500.
To identify PRO500, pull the drawer and look at the stamp on the metal runner member. It reads PRO500, or sometimes the Würth part number PRO500-12B, 15B, 18B or 21B for the length. If the stamp instead reads PRO600, PRO560, PRO634 or PRO Eco, use that model’s page instead; the box is close but not identical.
The included rear brackets (GHJ06, OGA03 and GHJ02) are for face frame cabinets, where the back of the runner needs to hang from the frame rather than screw straight to a flat cabinet side. A frameless cabinet does not need them; the runner screws directly to the side. Either mounting uses the same box, since the bracket changes how the runner attaches to the cabinet, not the notch, hook hole or width.
Clips: PRO500 ships with its own, we just press it on
PRO500 is one of the few runners here that arrives with its front locking device already included, a left and right pair, plus the rear brackets. There is no separate Würth part number for a standalone PRO500 clip; the device simply comes in the box with the runner.
Choosing “PRO500 Front Locking Devices” in our configurator, $5.99, has us press the pair that came with your PRO500 runner onto your new box before it ships; send the clips with your order, or in advance, and we fit them. It is not a separately sold part on our site or Würth’s. Choose No Clips if you would rather press them on yourself.
Lengths and depths we build for PRO500
| Depth | Added cost over the base box | Minimum inside cabinet depth, per Würth |
|---|---|---|
| 12 in | $0 | about 12 27/32 in (326 mm) to 14 17/32 in (369 mm) with the rear bracket |
| 15 in | $7.99 | about 15 7/8 in (403 mm) to 17 9/16 in (446 mm) |
| 18 in | $7.99 | about 18 27/32 in (479 mm) to 20 9/16 in (522 mm) |
| 21 in | $7.99 | about 21 27/32 in (555 mm) to 23 17/32 in (598 mm) |
Prices current as of October 2026. Depth is always whole inches on a notched box; width and height still go to the 1/32 in.
A worked example: 15 in opening to box
Say your cabinet opening measures 15 in wide and your PRO500 runner is stamped 15 in, with our standard 5/8 in sides. Outside width is the opening minus 13/32 in (10 mm, often written 3/8 in), so you enter 14 5/8 in as the width, pick Würth PRO500 as the slide model, and pick a 15 in depth to match the runner. We cut a 1 5/16 in by 1/2 in notch at each bottom rear corner and bore the 1/4 in hook hole 9/32 in in from the side and 7/16 in above the notch, both sides, free. If you add the “PRO500 Front Locking Devices” option, send the device that came with your runner and we press it on for $5.99 before shipping.
Keep your PRO500 slides or replace them?
Keep them if they still glide and close without grinding or sticking. The box, not the runner, is usually what fails first on a stapled or doweled drawer, and PRO500 is a mechanical part separate from it. Unscrew the old box, screw the new dovetailed box to the same runners at the same height, and reconnect the included locking device.
Replace the runners only if a member is bent, gritty or the soft close has failed. A new PRO500 pair in the same length keeps the same box.
Common mistakes with PRO500 boxes
- Buying a separate locking device. There is no standalone PRO500 clip; the pair ships in the box with the runner. If you lost it, contact your Würth branch rather than searching our store for a “PRO500 clip” product.
- Mixing PRO500 up with PRO600. The width rule looks the same, but PRO600’s clips, recess maximum and load rating are different parts and numbers.
- Giving us the box size instead of the opening. Measure the cabinet opening, not an old box that may already have play in it.
- Assuming the 75 lb rating is confirmed. Würth’s own documents disagree between 75 lb and about 55 lb; do not plan a load right at that line.
Technical sources
- Würth: PRO500 installation drawing, wurthmachinery.com. Revision: not stated.
- Würth: Wood Group PRO500 listing, wurthwoodgroup.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
Does PRO500 come with clips?
Yes. PRO500 ships with its own front locking device and rear brackets already in the box, which is not true of most other runners on this site. Our $5.99 configurator option is for pressing that included device onto your new box, not for selling you a separate part.
PRO500 vs PRO600: what is the difference?
Both share the same opening minus 1 21/32 in inside width rule. PRO600 is rated 100 lb by Würth, carries a BHMA, KCMA and BIFMA listing, and sells its clips separately; PRO500 is Würth’s lower cost tier, rated lower on its own documents, and ships with its clip included.
Will a box cut for Blum TANDEM fit PRO500?
On the numbers, yes: a 1 3/8 in TANDEM notch clears PRO500’s narrower 1 5/16 in notch, and the hook hole position matches. Würth makes no compatibility claim in writing, and the included PRO500 clip is Würth’s own part, not Blum’s, so order the box for the runner you will mount.
Can I buy PRO500 runners from Gritly?
No. We do not stock PRO500 runners or their locking devices. Order the runner from your Würth branch, and we notch, drill and press on the included clip for $5.99 when you choose that option.
What cabinet depth do I need for a 21 in PRO500 runner?
About 21 27/32 in (555 mm) minimum, up to 23 17/32 in (598 mm) with the included rear bracket, per Würth’s installation drawing.
Does PRO500 need a rear bracket on a face frame cabinet?
Yes, and it is included. PRO500 ships with rear brackets (GHJ06, OGA03, GHJ02) for hanging the back of the runner from a face frame. A frameless cabinet does not need one; the runner screws straight to the flat cabinet side. Either way the box is the same.
Related reading
- Notched drawer boxes, every slide model: the hub table for every runner we notch for.
- The full Würth PRO guide: PRO600, PRO560, PRO634 and PRO Eco in one place.
- Würth PRO600: the 100 lb step up, clips sold separately.
- Würth PRO560: a tighter bottom recess, clips required and sold separately.
- Würth PRO Economy: Würth’s other clip included runner.
- Undermount drawer slides explained: how the notch, hook and clip work together.
Sources
Dimensions and part numbers come from the Würth PRO500 installation drawing and the Würth Wood Group PRO500 listing, which disagree on the load rating (75 lb vs about 55 lb); we publish both rather than pick one. Check the drawing for your exact runner before cutting anything yourself.
Build your PRO500 box
Pick Würth PRO500 in the configurator, enter your outside width, and we cut the notch, drill the hook hole and press on your included locking device for $5.99 if you want it installed. Dovetailed, cut to the 1/32 in, built in our Las Vegas shop.