24" x 6" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply [Outer Dimensions: 26w X 8"h] Color_Black accordion dt { margin-bottom: 10px

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+ Product Details Size – 36"w X 8"h is the size for the duct opening measurement only

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

+ Product Description Ventilate your home or commercial space with our Aluminum Outdoor Weatherproof Louvers

24" x 6" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply [Outer Dimensions: 26w X 8"h] Color_Black accordion dt { margin-bottom: 10px24"w X 6"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 26" Width X 8" Height SEE IN DESCRIPTION HOW TO MEASURE A GRILLE Installs Directly On Round & Oval Spiral Duct No Frames, Box or Other Attachments Needed Commercial Grade Aluminum Will Never Rust Designed for Warehouses, Factories, Workshops, Gymnasiums & Restaurants Easy Unrestricted Air Flow For Your HVAC System 180 Degrees Double Direction Adjustable