Hafele's catalogs list soft close retrofits, track stoppers, floor guides and tracks for Slido sliding doors as separate items. This guide shows those parts for the D-Line11, D-Line42, F-Line18 and F-Line12 systems, how to tell the lines apart, and what to check before you order.
Sources: Hafele's Architectural Hardware catalog (online edition) and Furniture and Cabinetry Hardware catalog (2026). Set contents are covered in our guide to Slido sets and installation instructions, item numbers in our guide to Hafele item numbers.
Which Slido line do you have?
Without the set label, compare the installed hardware with the catalog descriptions:
- D-Line11 50P, 80P and 120P: a top hung system for wood doors up to 50, 80 or 120 kg (110, 176 or 264 lb) per door (pages 1.24-1.25). Page 1.27 gives the aluminum upper track profiles as width x height: single 31 x 33, 47 x 47 or 40 x 32 mm (the last used with a mounting rail), or double 70 x 33 or 81 x 33 mm.
- D-Line42 100S and 100R: barn door hardware for one wood door up to 100 kg (220 lb), 35-45 mm (1-3/8 to 1-3/4 inch) thick. 100S has a strap-mounted hanger, 100R a top-mounted hanger (pages 1.154-1.155).
- F-Line18 50A: a bottom rolling system for doors up to 50 kg (110 lb), with the soft closing mechanism integrated into the running track (page 7.28).
- F-Line12 20A: a bottom running system, door weight 20 kg (44 lb); the same guide track is used at the top and the bottom of the cabinet (page 7.16).
Slido D-Line11 50P, 80P and 120P parts
Page 1.25 lists a soft and self-closing mechanism and a shock absorber as accessories for retrofitting, by weight capacity. Both clamp onto the running gear; the soft close comes with a release device with stopper, the shock absorber with a retaining spring.
| Load | Soft close | Shock absorber |
|---|---|---|
| 50 kg | 940.42.304 | 940.42.305 |
| 80 kg | 940.83.300 | 940.83.301 |
| 120 kg | 941.02.300 | 941.02.301 |
According to page 1.25, either part can be retrofitted to sets supplied without soft close or with soft close on one side; page 1.24 says the soft close can be retrofitted or replaced at any time. Hafele's note on the shock absorber: if the closing speed is too low, the door may not close completely; if it is too high, the door may bounce back slightly.
Page 1.25 also prints a minimum door width for each set version, from 499 mm (soft close on one side, 50 and 80 kg) to 868 mm (soft close on both sides, 120 kg). Check your door against the version you will end up with.
Impact dampers (track stoppers)
Page 1.29 lists an impact damper, also called a track stopper on that page, for D-Line11 50P-120P, 50C-120C and 50I-120I doors that run in walls: after a slight push, the door bounces back out of the cavity so the flush pull can be reached, and the magnetic version also holds the door open. The page notes it is not suitable for use with the soft and self-closing mechanism. It is not the track stopper with retaining spring supplied in the sets (page 1.25).
| Load | Impact damper | With magnetic holder |
|---|---|---|
| 50 kg | 940.42.070 | 940.42.310 |
| 80 kg | 940.42.071 | 940.42.311 |
| 120 kg | 940.42.072 | 940.42.312 |
Floor guides, upper tracks and fixing parts
- Lower guides (page 1.28): standard floor guide 940.42.031, rattle-free floor guide 940.42.203, press-fit lower guide tracks in 1, 1.5 and 2 m (940.42.050 to 940.42.052) and an adjustable wall mounted lower guide 940.40.073.
- Upper tracks (page 1.27): every profile comes in 2, 3 and 6 m lengths, clear anodized and, for some profiles, black anodized. The 47 x 47 mm wall mounted track, for example, is 940.43.692 (2 m), 940.43.693 (3 m) or 940.43.696 (6 m).
- Fixing parts (page 1.27): mounting brackets, installed every 400 mm (15-3/4 inch), come in three versions by wall distance; the retaining bolts and screws for the upper track and mounting rails (set 941.25.090) are ordered separately.
Hafele barn door hardware parts: D-Line42 and BD500
For D-Line42 100S and 100R, page 1.155 lists the Smuso AD soft close mechanism as an accessory, by weight capacity and handing:
| Load | Left | Right |
|---|---|---|
| 40 kg (88 lb) | 941.32.015 | 941.32.016 |
| 80 kg (176 lb) | 941.32.017 | 941.32.018 |
| 100 kg (220 lb) | 941.32.019 | 941.32.020 |
The same page lists a splice kit to combine 2 upper tracks: 941.32.405 (black steel) or 941.32.407 (stainless steel). For BD500, pages 1.156-1.157 list no separate soft close; soft close comes in complete sets such as 941.32.034 (2 m track).
Slido furniture door parts: F-Line18 and F-Line12
- F-Line18 50A (page 7.29): the soft close mechanism 401.30.341 clamps into the running or guide track; with soft close on both sides, the minimum door width is 380 mm (page 7.28). Tracks are ordered separately, in 2.5 or 3.5 m lengths: single running and guide tracks (401.30.609, 401.30.610), dual guide tracks (401.30.611, 401.30.613) and dual running tracks (401.30.614, 401.30.615). Page 5 of the installation instructions (document 732.24.048) shows the tracks being cut to length.
- F-Line12 20A (page 7.17): the individual components include press-fit upper guides with lockable glide (gray 404.19.320, also brown, black and white) and press-fit running gears with or without height adjustment (gray 404.20.340 is height adjustable). The page says to use the door stop 404.06.004 only with the spring-loaded upper guide. Running and guide tracks come in plastic (2.5 or 3.0 m) or aluminum (404.16.904, 3.0 m).
Before you order a Slido part
- Track profile and finish: measure the width and height of the installed track, compare them with the catalog profiles, and note the mounting and whether the track is clear or black anodized.
- Weight class: D-Line11 retrofit parts and impact dampers are listed by door weight, 50, 80 or 120 kg, as in the set names 50P-120P.
- Running gears and set track stoppers: pages 1.24-1.28 (D-Line11) and 1.155 (D-Line42) list them only as part of the sets. For a single replacement, have the set item number ready and contact us.
- Item number before name: on our store, 940.42.304 and 940.42.203 are titled Slido Classic. Match the item number, not the title.
Hafele Slido parts at The Builders Supply
- Sliding, barn and pocket door hardware
- Sliding and folding cabinet door hardware
- D-Line11: soft close 940.42.304 (50 kg), impact damper with magnetic holder 940.42.312 (120 kg), rattle-free floor guide 940.42.203, 47 x 47 mm wall mounted track 940.43.693 (3 m)
Not sure which Slido line or weight class you have? Our customer support team is available Monday - Friday, 8 AM - 4 PM Central Time, at 1-888-800-7789 or [email protected].
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