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The Salice F70 21 inch soft-close undermount drawer slide is a full-extension, concealed runner made specifically for face-frame cabinets. Rated 170 lb per pair, it handles the loads that standard undermounts cannot — oversize kitchen drawers, deep pantry pull-outs, and utility drawers that carry real weight — while keeping all hardware hidden beneath the box.
Most undermount slides are sized for standard kitchen drawers — pots, pans, and flatware in the 75 to 110 lb range. The F70 steps up to 170 lb per pair, which opens up applications that lighter undermounts cannot serve: double-deep base drawers loaded with cast iron, large pantry pull-outs stacked with canned goods, or shop and laundry drawers that take a beating every day. Full extension means everything at the back of the box is reachable without digging, and the soft-close damper makes the close feel finished regardless of how hard the drawer is pushed.
The F70 runs on a steel body with a zinc finish — a functional, corrosion-resistant surface for indoor cabinetry that stays hidden beneath the drawer box in everyday use. Because the slide is fully concealed, the finish serves the hardware rather than the room. The 21 inch nominal length suits drawers built to that depth; build the box from material between 1/2 and 5/8 inch thick, following Salice's published box-width formula, bottom recess, and rear notch specification for the F70 series. Front locking devices are Salice F70-specific and do not interchange with other brands or series.
Cabinet shops building traditional face-frame kitchens with deep or heavily loaded drawers will find the F70 covers territory where premium 90 to 100 lb undermounts fall short. It also suits residential installers fitting out custom pantry bases, and homeowners tackling a renovation in an existing face-frame kitchen who want concealed hardware with genuine heavy-duty capacity. If the job is frameless construction, a different F70 configuration applies — this SKU is the face-frame version.
This model is configured for face-frame cabinet construction, where the rear of the slide is supported by rear mounting brackets behind the frame. Rear mounting brackets are series-specific Salice F70 parts and are not included with the slide — confirm you have the correct brackets for face-frame installs before the job begins.
Per pair, which is the standard way undermount load ratings are stated. One pair of F70 slides carries 170 lb — do not divide the number across the two members.
Yes. Undermount slides require the box to be built to the manufacturer's specification for this series — nominal 21 inch length, box width calculated from Salice's formula for 1/2 to 5/8 inch sides, correct bottom recess, and rear notch. An off-spec box will not seat properly on the slides.
Locking devices for the F70 are Salice F70-specific accessories. Confirm whether they are included with this SKU or need to be ordered separately before placing your order.
This is the face-frame version of the F70. Frameless installs require the frameless configuration of the line — choose that model if your cabinets have no front frame.
When the drawer is deep, the load is real, and the cabinet is face-frame, the F70 21 inch soft-close undermount gives you the capacity and clean look the job calls for — order one pair per drawer and build the box to spec.
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