12x2 Black Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) LSD Installs with the same hidden

Installs with the same hidden side screws used on walls

Aluminum won’t rust in humid rooms like bathrooms

closes to block air from unused rooms

QUIETER OPERATION THAN TRADITIONAL STEEL GRILLES: Traditional stamped steel return grilles use narrow slots that restrict airflow and can cause whistling or humming noise

12x2 Black Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening) LSD Installs with the same hiddenCHECK SIZE BEFORE PURCHASE: This 12x2 linear slot diffuser fits a 12" 2" duct opening (the hole in your wall, ceiling, or floor not your old cover face). See the full 12x2 sizing guide Fits a 12" 2" 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