155 lb Capacity And Full Extension in a Concealed 21 Inch Runner

This is Blum's MOVENTO undermount slide in the 21 inch length — a fully concealed, full-extension runner rated 155 lb per pair with integrated BLUMOTION soft-close, built for drawer boxes with 1/2 to 5/8 inch sides.

Key Features

• 155 lb weight capacity per pair — well above the standard kitchen-grade 90 to 110 lb undermount range, covering heavily loaded drawers without stepping up to a side-mount slide.
• Full extension — the entire 21 inch drawer box comes out to the cabinet face, so nothing stays hidden at the back.
• Integrated BLUMOTION soft-close — Blum's built-in damper catches the drawer near the end of travel and settles it shut silently.
• Fully concealed undermount design — the slide mounts beneath the box, keeping the cabinet interior hardware-free when the drawer is open.
• Fits face-frame and frameless cabinets — mount directly in frameless construction or add the series-specific MOVENTO rear mounting brackets for face-frame installs.
• Steel construction, zinc finish, roller-bearing carriage — indoor-rated materials with a smooth, quiet pull under load.

Where This Slide Earns Its Rating

The 155 lb per pair capacity makes this MOVENTO the right call for drawers that standard undermounts cannot reliably carry. Think pots-and-pans drawers stacked deep with cast iron, oversized cutlery drawers loaded with heavy flatware sets, file or media storage drawers, and large bathroom vanity drawers holding towels and supplies. At 21 inches, the slide also suits deeper base cabinets where a shorter runner would not track properly. The full-extension travel means every inch of that depth is reachable without tilting the drawer or fishing toward the back — the whole box comes out.

Build and Finish

MOVENTO runs on a roller-bearing carriage inside steel members finished in zinc. The zinc finish protects the steel through years of indoor kitchen and bath service; it is a functional finish, largely hidden beneath the drawer box once installed. The 3/16 inch side clearance built into the MOVENTO system is tighter than a typical side-mount slide, which is part of what keeps the look clean. Build the drawer box to Blum's published specification for the MOVENTO series — correct nominal length, box-width formula for the 3/16 inch clearance, bottom recess, rear notch, and drilling for the MOVENTO front locking devices. An off-spec box will not seat correctly on the slides.

Who This Is For

Cabinet shops building production runs of premium kitchens reach for this slide when a client's drawer contents push past what a standard 90 or 110 lb undermount handles. Designers specifying high-use kitchens with deep storage drawers — particularly the lower cabinets flanking a range — get the concealed look they want without compromising on load. Custom builders working on bath vanities with heavy stone or tile countertops above deep drawers also benefit from the extra capacity margin. This slide fits drawer boxes with 1/2 to 5/8 inch sides, so it covers the dovetailed and doweled box stock most shops run. For 3/4 inch sides, a different MOVENTO configuration is the correct choice — this version is the 5/8 inch model.

The Right Slide for Drawers That Work Hard

When the load exceeds what a standard undermount handles and a concealed look is non-negotiable, MOVENTO's 155 lb capacity in a 21 inch full-extension runner closes the gap between premium aesthetics and serious working capacity.