40" x 16" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply [Outer Dimensions: 42w X 18"h] w20h20 Design – Unrestricted airflow For

Design – Unrestricted airflow For Your HVAC system - noise free components - no vibrating louvers etc

much more than required 700 PSI for R410

Sleek Design – The clear and unobtrusive design ensures it blends seamlessly with any home

actual front end outer dimensions are approximately 28 5/8" width X 28 5/8" height

+ Product Details Size - 34"w X 14"h is the size for the duct opening measurement only

40" x 16" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply [Outer Dimensions: 42w X 18"h] w20h20 Design – Unrestricted airflow For40"w X 16"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 42" Width X 18" 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