10x4 Black Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) Wall The white powder-coated finish stays

The white powder-coated finish stays clean under daily HVAC airflow and temperature changes

and remodels where a consistent white register finish matters across several rooms

This 12x12 air return grille is designed for a standard 12" × 12" duct opening

As long as your duct opening is approximately 10" × 4" and you have at least 1-1/4" of clearance behind the surface

just a basic metal face

10x4 Black Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) Wall The white powder-coated finish staysCHECK SIZE BEFORE PURCHASE: This 10x4 linear slot diffuser fits a 10" 4" duct opening (the hole in your wall, ceiling, or floor not your old cover face). See the full 10x4 sizing guide Fits a 10" 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