12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] 18in diameter Supports are hidden behind blades

Supports are hidden behind blades for a clean appearance

customize cuts and flares as needed

+ Product Details Size - 16"w X 30"h is the size for the duct opening measurement only

This access door offers enhanced safety and security

+ Product Description Introducing our 8" x 16" or 16" x 8" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] 18in diameter Supports are hidden behind blades+ Product Details Size Refers to duct opening only. The face frame extends roughly 1. 5" on each side. Do not measure the overall grille for sizing. Design All aluminum frame and back blades. Rustproof and built to last in moisture prone environments. Quiet Airflow Opposing blade damper design reduces vibration and noise for smoother air distribution. Clean Finish White powder coated surface resists chips, scratches, and discoloration over time. Easy