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The Grass 13904-12 is a right-hand, screw-on adjustable rear mounting bracket in white — a system-specific accessory that supports the back end of a Grass drawer slide in face-frame cabinet construction, where the cabinet side is set back from the frame and the slide needs a rear anchor point to span the gap.
Face-frame cabinets require rear support for drawer slides that frameless cabinets do not. Without a rear bracket, the back of the slide hangs unsupported, which causes the slide to rack under load and the drawer to pull unevenly. This bracket bridges the gap between the rear of the slide and the cabinet back, giving the slide a fixed rear anchor at the correct height. The adjustability matters most when cabinet interiors are not perfectly uniform — on-site built-ins, older renovation work, or production runs where depth tolerances are wider than spec. A small turn of the bracket sets the slide level without shimming or redrilling.
White is the right choice when the cabinet interior is white melamine, white paint, or a similar light color. The plastic body keeps weight low and eliminates any rust concern in the closed, dry environment of a kitchen or bath cabinet. Because the bracket sits at the rear of the cabinet, well behind the drawer box, finish matching is about visual consistency on the job rather than a structural consideration. Plastic construction also means the bracket will not scratch or mar a prefinished interior panel during installation.
Cabinet shops running Grass drawer slides into face-frame boxes keep a stock of these brackets on hand — one right-hand and one left-hand per drawer opening. Contractors retrofitting slides into existing face-frame casework reach for them when the original installation lacked rear support and drawers started racking. Kitchen designers specifying Grass slide systems into traditional American-style cabinetry include them as a line item alongside the slides themselves. This bracket is a Grass system component; it is engineered to work with Grass slides and is not a universal fit for other brands or series.
You need two — one right-hand and one left-hand bracket — to support both sides of the slide at the rear. This listing covers the right-hand member only.
No. Rear mounting brackets are a face-frame solution. In frameless cabinets, the slide screws directly to the flat cabinet side and no rear bracket is needed.
This is a Grass system component. Confirm compatibility with your specific Grass slide series before ordering — rear brackets are series-specific and do not interchange across brands.
This SKU is the white version. Other finish options are available in the bracket family — check the related variants for the color that matches your cabinet interior.
A rear mounting bracket is a small component with an outsized effect on how a drawer tracks and feels over years of daily use. Getting the right hand, the right finish, and the right system match means the slide performs the way it was engineered to — and the job moves forward without a second trip to the hardware shelf.
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