Short Answer
What load rating do I need for drawer slides?
Choose a drawer slide load rating above the real moving weight of the drawer, tray, cargo, and hardware, then add margin for full-extension leverage, frame stiffness, fasteners, and vehicle movement if the drawer is used in a truck, RV, trailer, or mobile workspace.
Direct answer
Start by adding the drawer box, tray surface, face panel, handles, mounted equipment, and expected contents. Choose a slide rating with enough margin above that number, especially if the drawer will be fully extended, used in a vehicle, or loaded heavily near the front edge.
What counts as load?
When to choose more margin
Choose more margin when the drawer is wide, long, used at full extension, loaded with tools, mounted in a vehicle, or supported by a frame that may flex. A slide rating is not a guarantee by itself. The frame, fasteners, drawer stiffness, and rail alignment decide whether the system actually feels strong in use.
For the full planning guide, read how to choose drawer slide load rating. For the term itself, see load rating.
COREAX product match
COREAX heavy-duty drawer slides fit side-mount full-extension pull-outs where load margin, lock control, and release access matter for truck, RV, garage, and utility storage builds.
View Heavy-Duty Drawer SlidesFAQ
Does drawer slide load rating include the drawer box?
No. Count the drawer box, tray, face panel, handles, hardware, and stored items as part of the moving load.
Do truck drawers need more load margin?
Yes. Truck drawers see vibration, braking, slopes, and shifting cargo, so a stronger margin is useful.
Can a slide bind below its rated load?
Yes. A weak frame, poor fasteners, tight clearance, or a flexible drawer can cause binding below the listed rating.