Würth PRO Economy
Drawer box for Würth PRO Economy / PRO Eco: sizes, notch and hook holes
Würth’s PRO Economy, also sold as PRO Eco, is the entry point of the PRO undermount line through Würth Louis and Company and other Würth branches, with a 3D locking device already in the box. This page is for anyone ordering a dovetail box to run on PRO Economy.
Quick answer. A Würth PRO Economy 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, cut to the 1/32 in. PRO Economy ships with its own 3D locking device already in the box, so the $5.99 clip charge is for pressing that device on, not a separately sold part.
The PRO Economy drawer box, dimension by dimension
| Dimension | Würth PRO Economy / PRO Eco |
|---|---|
| INSIDE DRAWER WIDTH | opening minus 42 mm (1 21/32 in) |
| OUTSIDE WIDTH, 5/8 IN SIDES | opening minus 10 mm (13/32 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 3/16 in (5 mm), the tightest top clearance in the Würth PRO line |
| 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 |
| CLIP OFFSET FROM THE SIDE | 5/8 in (16 mm) |
| CLIP SETBACK FROM THE FRONT | about 5/32 in (4 mm) |
| LENGTHS | 12, 15, 18, 21 in |
| LOAD, PER WÜRTH | about 75 lb per one Würth listing; the installation drawing instead gives 35 kg, about 77 lb; a third Würth source leaves the rating blank |
About the PRO Economy runner
PRO Economy, also called PRO Eco, is a full extension, soft close concealed undermount runner built for Würth by Hanstar under the models 04191 and 04195. Würth’s own drawing titles it a soft closing full extension slide for 16 mm board with a 3D locking device, and that 3D device, with a lever disconnect, ships already mounted in the box when you buy the runner new. Würth sells no push to open version of PRO Economy.
To identify PRO Economy, pull the drawer and look at the stamp on the metal runner member for PRO Economy or PRO Eco, or the part numbers PROECOUM-12B, 15B, 18B or 21B. If the stamp instead reads PRO500, PRO560, PRO600 or PRO634, use that model’s page; the box is close but not identical.
Clips: PRO Economy ships with its own, we just press it on
PRO Economy arrives with its 3D locking device, which includes a lever disconnect, already mounted on the runner. There is no separate Würth part number for a standalone PRO Economy clip; the device comes with the runner.
Choosing “PRO Economy Front Locking Devices” in our configurator, $5.99, has us press the device that came with your runner onto your new box before it ships; send it with your order and we fit it. It is not a separately sold part on our site or Würth’s. Choose No Clips if you would rather press it on yourself. A rear bracket, PROECOUM-RB, is also included for face frame cabinets; frameless cabinets do not need it.
Lengths and depths we build for PRO Economy
| Depth | Added cost over the base box | Minimum inside cabinet depth, per Würth |
|---|---|---|
| 12 in | $0 | about 12 15/16 in (329 mm) to 14 23/32 in (374 mm) |
| 15 in | $7.99 | about 15 15/16 in (405 mm) to 17 23/32 in (450 mm) |
| 18 in | $7.99 | about 18 15/16 in (481 mm) to 20 23/32 in (526 mm) |
| 21 in | $7.99 | about 21 15/16 in (557 mm) to 23 11/16 in (602 mm) |
Prices current as of October 2026. PRO Economy’s minimum cabinet depth table is its own; it runs close to, but not identical to, PRO500’s.
A worked example: 12 in opening to box
Say your cabinet opening measures 12 in wide, a common vanity drawer width, and your PRO Economy runner is stamped 12 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 11 5/8 in as the width, pick Würth PRO Economy / PRO Eco as the slide model, and pick a 12 in depth to match the runner. Check your cabinet has at least about 12 15/16 in of inside depth. 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, free. Add “PRO Economy Front Locking Devices” and send us the device that came with your runner; we press it on for $5.99.
Keep your PRO Economy 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 PRO Economy 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 device.
Replace the runners only if a member is bent, gritty or the soft close has failed. A new PRO Economy pair in the same length keeps the same box.
Common mistakes with PRO Economy boxes
- Buying a separate locking device. There is no standalone PRO Economy clip; it ships mounted on the runner. Contact your Würth branch if you need a replacement.
- Using the PRO500 cabinet depth table. PRO Economy has its own minimum depth figures, close to PRO500’s but not identical.
- Ignoring the tight top clearance. PRO Economy wants about 3/16 in above the side, less room than most other PRO runners.
- Planning a load right at 75 lb. Würth’s own documents give three different figures across its PRO Economy listings.
Technical sources
- Würth: PRO Economy installation drawing, wurthmachinery.com. Revision: not stated.
- Würth: Wood Group PRO Eco 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 PRO Economy come with clips?
Yes. PRO Economy ships with its 3D locking device, lever disconnect included, already mounted on the runner. Our $5.99 configurator option is for pressing that included device onto your new box, not for selling you a separate part.
PRO Economy vs PRO600: what is the difference?
PRO Economy is Würth’s lowest priced undermount runner, built by a different OEM than PRO600, rated lower on its own documents, with a narrower 1 5/16 in notch and its clip included. PRO600 is rated 100 lb, carries a BHMA, KCMA and BIFMA listing, uses a wider 1 3/8 in notch, and sells its clip separately.
Does PRO Economy need a rear bracket on a face frame cabinet?
Yes, and it is included. PRO Economy ships with the PROECOUM-RB rear bracket for hanging the back of the runner from a face frame. Frameless cabinets do not need it; the runner screws straight to the flat cabinet side.
Can I buy PRO Economy runners from Gritly?
No. We do not stock PRO Economy 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 load is PRO Economy rated for?
Würth’s own documents are not consistent: one listing gives about 75 lb, the installation drawing gives 35 kg (about 77 lb), and a third listing leaves the rating blank. We publish all three rather than pick one.
Can I use 1/2 in sides with PRO Economy?
Yes, PRO Economy is rated for sides up to 5/8 in, which includes 1/2 in. The outside width changes with side thickness the same way it does across the whole Würth PRO family: opening minus 13/32 in (10 mm, often written 3/8 in) at 5/8 in sides, opening minus 5/8 in at 1/2 in sides, since the inside width stays fixed and a thinner side gives up less of the deduction. Tell us your exact side thickness when you order so we cut the right outside width.
Related reading
- Notched drawer boxes, every slide model: the hub table for every runner we notch for.
- The full Würth PRO guide: PRO500, PRO560, PRO600 and PRO634 in one place.
- Würth PRO500: another clip included runner, from a different OEM.
- Würth PRO600: the 100 lb step up, clips sold separately.
- Undermount drawer slides explained: how the notch, hook and clip work together.
Sources
Dimensions and part numbers come from the Würth PRO Economy installation drawing and the Würth Wood Group PRO Eco listing, which disagree on the load rating; we publish all the figures rather than pick one. Check the drawing for your exact runner before cutting anything yourself.
Build your PRO Economy box
Pick Würth PRO Economy / PRO Eco 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.