Berta Store · Installation Guide
20-inch drawer slidesDrawer Slide Installation Video
Watch Berta's installation video for full-extension, ball-bearing side-mount drawer slides before starting your 20-inch drawer project.
Fit & Project Planning
Check usable depth before ordering 20 inch drawer slides
Measure from the actual mounting start point
A projecting face frame or an inset drawer front can change where the rail starts. Measure the clear run along that mounting line, then allow for the rear support arrangement specified for the installation. Do not measure around an obstruction and assume the rail can pass through it.
Separate drawer depth from the cabinet shell
In an illustrative 24-inch-deep cabinet shell, the back, front setback and hardware can leave less room for a slide than the exterior number suggests. That does not automatically select 20 or 22 inches; use the measured space, drawer length and the slide instructions together.
Check movement with the planned load
An empty drawer is not the same as the finished working drawer. Include the box and contents in load planning, and follow the supplier’s installation and rating limits. Do not use the 10-pair pack quantity as a multiplier for one drawer’s capacity.
Planning example: Twenty inches equals 508 mm. A rail sold as 500 mm may differ in actual length and mounting pattern. Compare the physical hardware before a replacement purchase.
20 inch drawer slide questions
Will these fit a cabinet with a 20-inch outside depth?
The outside measurement alone is insufficient. The slide, drawer and mounting hardware must fit the clear internal mounting space.
Can I order these for a single drawer?
This listing is a 10-pair pack. One drawer uses one pair in the intended side-mount arrangement, leaving the other pairs for additional compatible drawers.
Where is the matching 20-inch soft-close option?
Use the soft-close side-mount card below to open that family’s 20-inch option. Recheck fit; the linked undermount family does not list a 20-inch variant.
Compare Other Drawer Slides
Find other sizes using the length selector above or browse the Drawer Slides collection. Compare each product's mounting specifications before substituting a different system.


