10" x 10" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 13" x 13"] Width_18in 30" x 8" Pleated MERV

30" x 8" Pleated MERV 8 Filter for HVAC Return Filter Grille - 3 Pack

+ Product Details Size & Compatibility – The 10" clinch base side metal take off is compatible with duct 10"

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

+ Product Description Introducing our superior-quality Stick-On Collar

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10" x 10" [Duct Opening] Ceiling Supply Diffuser Vent Cover – Corner Direction with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 13" x 13"] Width_18in 30" x 8" Pleated MERV+ 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