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HVAC Premium has been providing superior in quality service for many many years. Our products are second to none, and weve help numerous contractors, DIY projects, and home improvement & remodeling specialist complete their masterpiece. 34 inchw X 22 inchh Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 35.75 inch Width X 23.75 inch Height - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLENever Rust - Our high quality rigid aluminum is the longest lasting grille on the market. It will never rust and can be easily cleaned. The rigid Aluminum will keep its shape as in brand new condition. - Rigid Design - Noise Free Components - No Vibrating Louvers Etc. - Easy Unrestricted Air Flow For Your HVAC System - How To Measure A Grille - Overall