What is the difference between side mount and undermount drawer slides?

Side mount slides fix to the drawer sides and cabinet walls — easy to fit and tolerant of cabinet tolerances. Undermount slides sit beneath the drawer box, hide the hardware for a cleaner look, and need a compatible drawer box with the right reveal. AOLISHENG builds both: side-mount heavy-duty series (2053 / 2576 / 7625) and undermount soft-close series (MK316 / U4510K).

What does full extension mean compared with 3/4 extension?

3/4 extension leaves the back of the drawer still inside the cabinet; full extension brings the whole drawer clear of the cabinet face so you can reach the back corner. Most AOLISHENG heavy-duty and soft-close series are full extension.

How do I choose the load rating for a drawer slide?

Add the heaviest realistic contents, then add 25–30% headroom so the slide is not run at 100% of its rating every day. AOLISHENG ratings run from 100 lb (U1245) through 265 lb (2053 family), 330 lb (2071), 500 lb (2576 family) up to 770 lb (AQ7625K3 twin-slide).

What are soft-close drawer slides and when do I need them?

Soft-close slides use a damper that pulls the drawer shut in the last few centimetres, preventing slamming. They are most noticeable on kitchen and bathroom cabinetry and also reduce the shock load that gradually loosens a carcass. AOLISHENG soft-close options include K2053, U4510K and MK316.

Are stainless steel slides worth it for outdoor or marine use?

Yes — whenever the slide is exposed to weather, salt air, humidity or frequent wash-down (outdoor kitchens, marine galleys, food-prep, coastal installs). AOLISHENG stainless options include W2053, W2576, W5115 and U4510K.

Which AOLISHENG series number maps to which spec?

The stamped codes read: 1245 = 100 lb stainless side mount; 4510 = 100 lb stainless; 5115 = 150 lb; 2053 = 265 lb; 2071 = 330 lb; 2576 = 500 lb; 7625 = 770 lb twin-slide. Remove the drawer and read the code on the inner rail, or send a photo and AOLISHENG will match it.

Can heavy-duty slides be used in RVs, trucks and vehicles?

Yes, with a locking slide so the drawer cannot slide open under braking or cornering. Use locking series such as D5115, D2053 or D7625 for any moving-vehicle storage.

Drawer Slide Guides, Household, industrial machine, RVs

How to Choose Drawer Slides: A Buyer’s Guide for OEMs and Makers

Posted by

Aolisheng

September 17, 2026

On September 12, 2026

Choosing a drawer slide looks simple until the first drawer sags, rattles or binds. The slide is the part that decides whether cabinetry feels premium or cheap, and the wrong choice shows up as warranty claims and returns. This guide walks the four decisions every buyer should make before ordering.

1. Match the Load Rating to the Heaviest Drawer

Add up everything the drawer will ever hold, then add a 25–30% safety margin. A pan drawer of cast iron hits 80 lb easily; a loaded truck toolbox passes 150 lb. AOLISHENG’s range runs from 80 lb furniture slides up to 770 lb heavy-duty rails. Undersizing is the single most common reason ball bearings flatten and slides sag.

2. Choose the Mount Type

Side mount — screws to drawer sides and cabinet walls; the easiest to retrofit and the most forgiving.
Undermount — hides completely under the drawer; the standard for frameless kitchen cabinets (see the 80 lb undermount soft-close slide).
Bottom mount — carries load on the cabinet floor; suits stair storage where sides cannot take a fixing.

3. Full Extension vs 3/4 Extension

A 3/4 extension slide leaves the back few inches inside the cabinet. Full extension pulls the whole drawer clear of the face — what you want for deep pan drawers, filing drawers and toolboxes. On a heavy-duty build, full extension is effectively standard.

4. Pick the Feature You Need

Soft close — damps the last inches; default for kitchens and bedrooms.
Push to open — opens with a press, no handle; for handleless fronts.
Locking — holds drawers shut (and open) for RV, camper and service-vehicle storage.

Explore the AOLISHENG Range

Browse the full collection by type: side mount, stainless steel, soft close, locking and push to open. For a custom length, hole pattern or finish, talk to our engineers.

Application-to-series shortlist for OEM buyers

Use this shortlist to get from an application to a series before you look at individual part numbers. Load ratings are per pair.

Application	Series	Load rating	Why this series	Browse
Kitchen and bathroom cabinets	A4510, K1245, MK316	100 lb / 80 lb	45 mm side-mount or concealed undermount, soft-close option	View product
Wash-down, marine or coastal	U4510K, W2053, W2576	100 lb / 265 lb / 500 lb	304 stainless options across the range	View product
Toolboxes and workbenches	A5115, A2071	150 lb / 330 lb	Ball bearing, full extension	View product
RV, truck and mobile installations	D5115, D7625	150 lb / 500 lb	Locking versions hold the drawer shut in transit	View product
Under-stair and stair storage	A2047	265 lb	47 mm bottom-mounted stair slide	View product
Server racks and enclosures	2U server rack rail, A7625	35 kg / 220 kg	Rack rail built to order, or the 76 mm locking series	View product
Handle-free furniture	F1245, P4510	100 lb	Push-to-open, with soft-close on P4510	View product
Non-standard stroke or load	Made-to-order lines	Per specification	Built to drawing, including double-stack and bidirectional	View product

Five checks before you request a quote

Closed length. Measure the drawer from front to back; that is the slide length you order.
Loaded weight. Weigh the drawer full, then add 25 to 30 percent headroom.
Mounting and clearance. Side-mount needs about 12.7 mm per side on a 45 mm slide, 19 mm on a 53 mm slide; undermount needs clearance beneath the drawer box.
Extension and action. Full extension for deep storage, soft-close for furniture, locking for anything that moves.
Material and finish. Q235 cold-rolled steel with blue zinc or black electrophoresis indoors, 304 stainless outdoors and in wash-down areas.

OEM and volume enquiries: request a quote. Not sure which row fits? talk to an engineer.