8x6 White Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) RFG Duct opening size: 6" ×

Duct opening size: 6" × 6" (this is what you measure)

Drop-in return air replacement for any 10" × 4" duct opening — no remodeling required

Built-in washable mesh pre-filter — traps dust

and basement family rooms where the opening needs more coverage than compact registers

8x6 White Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) RFG Duct opening size: 6" ×CHECK SIZE BEFORE PURCHASE: This 8x6 linear slot diffuser fits a 8" 6" duct opening (the hole in your wall, ceiling, or floor not your old cover face). See the full 8x6 sizing guide Fits a 8" 6" 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