Buying a drawer slide looks simple until the drawer is 900 mm wide, loaded with cast-iron pans, and mounted in a moving vehicle. This guide walks through the five decisions that actually change how a slide performs — load rating, extension type, mount style, feature set and material — and points to the AOLISHENG models that match each one. Everything here is based on the slides we build and sell, with load figures taken from our own product listings.

1. Measure first: the three numbers you need

Before looking at features, take three measurements. Getting these wrong is the single most common reason a slide order has to be returned.

  • Cabinet opening width. Measure inside the cabinet, wall to wall. The slide body plus the drawer box has to fit in that gap with clearance on both sides — for standard side-mount ball bearing slides that clearance is usually around 13 mm per side.
  • Slide length. Match it to the drawer box depth, not the cabinet depth. A 500 mm drawer needs a 500 mm slide; buying longer does not add travel and the rear mounting bracket will not line up.
  • Mounting clearance. Side mount needs clear vertical space on the drawer sides. Undermount needs a specific drawer-box bottom thickness and groove geometry. Bottom mount needs a flat surface under the drawer.

If you are replacing existing hardware, take the old slide off and read the stamped code on the rail — most AOLISHENG series (1245, 4510, 5115, 2053, 2071, 2576, 7625) are stamped on the inner member.

2. Load rating: size for the heaviest day, not an average day

Add up what the drawer will hold at its worst, then add a 25–30% margin. A slide running permanently at its rating will still work, but the ball bearings flatten faster and the glide gets notchy. Here is how our range breaks down:

3. Extension: how far does the drawer actually come out?

  • 3/4 extension — the drawer opens about three quarters of its length. Cheaper and perfectly fine for bedside tables, but the back of the drawer stays buried.
  • Full extension — the whole drawer clears the cabinet face. This is the default across the AOLISHENG range and what you want for kitchen cabinets, toolboxes and any drawer where you need to reach the back corner.
  • Over-travel — the drawer front travels completely clear of the cabinet, which matters on inset/overlay fronts where the drawer face would otherwise collide with the cabinet frame.

4. Mount style: side, undermount or bottom

  • Side mount is the workhorse: two rails fixed to the drawer sides and the cabinet walls. Easiest to install, most forgiving of cabinet tolerances, and the basis of our side mount range.
  • Undermount hides the hardware entirely — you see a clean drawer box when it is open. It needs a compatible drawer box and is the standard choice for frameless kitchen cabinetry, e.g. the MK316.
  • Bottom mount carries the load on a rail under the drawer. It suits wide, shallow drawers and unusual cavities such as under-stair storage — see bottom slide rails.

5. Features worth paying for (and when to skip them)

  • Soft close — a damper catches the drawer in the last few centimetres. Worth it on kitchen and bathroom cabinetry, on anything in a bedroom, and anywhere a slammed drawer is a daily annoyance. Browse soft close drawer slides.
  • Push to open — no handle, press the front and the drawer releases. Ideal for handleless kitchen runs and bathroom vanities. See push to open drawer slides.
  • Locking — the slide holds closed (and sometimes open) until released. Non-negotiable in moving vehicles, service trucks and job-site toolboxes. See locking drawer slides.
  • Detachable / disconnect — the drawer lifts off the rail without tools. Useful for workshop bases and medical carts that need cleaning.

6. Material: cold-rolled steel or stainless?

Standard cold-rolled steel slides are the right call for indoor furniture and dry workshops. Move to stainless when the slide will see weather, salt air, wash-down cleaning, or permanent outdoor installation — boat galleys, outdoor kitchens, food-prep areas, coastal homes. Our stainless steel drawer slides cover 100 lb through 500 lb so you rarely have to trade load capacity for corrosion resistance.

Quick pick: which slide for which job

Application Typical load Suggested AOLISHENG series Notes
Kitchen base cabinets 80–100 lb K1245 / A4510 Full extension soft close is the default spec
Handleless kitchen / bathroom 100 lb F1245 / P4510 Push-to-open, no handle needed
Frameless cabinetry, hidden hardware 80 lb MK316 Undermount, soft close
Bedroom / office furniture 80–100 lb U1245 Quiet glide, low load
Workshop workbench drawers 150–330 lb A5115 / A2071 Size up if drawers hold power tools
Truck / job-site toolbox 150–500 lb D5115 / D7625 Locking is essential in a moving vehicle
RV / camper storage 265–500 lb D2053 / W2576 Locking + corrosion resistance
Outdoor kitchen / marine 100–500 lb Stainless range Stainless throughout
Under-stair / wide shallow drawers 265 lb A2047 Bottom mount
Industrial fixtures / garage platforms 770 lb Twin-slide 770 lb Doubled rail assembly

Browse AOLISHENG drawer slides by category

Drawer slide buying FAQ

What size drawer slide do I need?

Order the slide length to match the drawer box depth, not the cabinet depth. Then confirm the cabinet opening width leaves clearance for the slide plus drawer box on both sides.

How much weight should a drawer slide carry?

Add the heaviest realistic contents, then add 25–30% headroom. Running a slide at 100% of its rating every day shortens its service life.

What is the difference between full extension and 3/4 extension?

3/4 extension leaves the back of the drawer inside the cabinet. Full extension brings the whole drawer clear of the cabinet face, so you can reach the back corner.

Do I need soft close?

Not functionally — but on kitchen and bathroom cabinetry it is the single upgrade users notice most. It also reduces the shock load that gradually loosens a carcass.

Are locking slides necessary in an RV or truck?

Yes. Without a lock, a loaded drawer will slide open under braking or cornering. Use a locking slide such as D5115, D2053 or D7625 for any drawer in a moving vehicle.

When should I choose stainless steel slides?

Whenever the slide is exposed to weather, salt air, humidity or frequent wash-down — outdoor kitchens, marine galleys, food-prep areas and coastal installations.

Can I replace one slide or do I need a pair?

Slides are sold as pairs or multipacks because both sides must wear evenly. Replacing a single rail usually leaves the drawer running slightly off-axis.

What is the difference between side mount and undermount?

Side mount fixes to the drawer sides and cabinet walls — easy to fit and tolerant of cabinet tolerances. Undermount sits below the drawer box, hides the hardware, and requires a compatible drawer box.

How do I know which AOLISHENG series I currently have?

Remove the drawer and read the code stamped on the inner rail — 1245, 4510, 5115, 2053, 2071, 2576 and 7625 are all stamped. Send us a photo and we will match it.

Not sure which one? Send us the numbers.

Tell us the cabinet opening width, the drawer length and the weight the drawer has to carry, and we will confirm the right series before you order. Request a quote or contact the AOLISHENG team.