10x4 White Slim Design Aluminum Linear Slot Diffuser (Duct Opening) ALSD Make sure there is enough

Make sure there is enough flat surface for a flush fit

Replaces dated stamped-steel grilles in living rooms

Matte black is a strong visual choice against dark-stained hardwood

Larger return openings like 14x6 are often used in central hallways

10x4 White Slim Design Aluminum Linear Slot Diffuser (Duct Opening) ALSD Make sure there is enoughCHECK SIZE BEFORE PURCHASE: This 10x4 slim linear slot diffuser fits a 10" 4" duct opening (measure the hole in your wall, ceiling, or floor not your old cover face). See the full 10x4 sizing guide Only 1 1 4" neck depth fits shallow ducts where standard models wont go. Drop in replacement for any 10" 4" duct opening no remodeling required. Modern minimalist slot design that blends with contemporary interiors. Solid alloy aluminum rust proof, dent