12x4 White Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) 4 Slot and no remodeling

and no remodeling

and homeowners replacing multiple old registers during one project

Sizing Guide — Will a 14x2 fit your space

choose a dedicated 10x4 air return grille with pre-filter instead

and accent-wall applications where the finish matters as much as the function

12x4 White Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) 4 Slot and no remodelingCHECK SIZE BEFORE PURCHASE: This 12x4 linear slot diffuser fits a 12" 4" duct opening (the hole in your wall, ceiling, or floor not your old cover face). See the full 12x4 sizing guide Fits a 12" 4" duct opening measure the hole, not your old cover face. Drop in surface mount replacement no drywall, flooring, or duct modification required. Modern minimalist slot design for contemporary interiors and cleaner visual lines. Solid alloy aluminum rust