36"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 11.75"h] w6h6 Secure Locking Mechanism – Features

Secure Locking Mechanism – Features a permanently attached eight-tumbler lock with a supplied key for added security

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 22" OR 22" x 28" duct opening (measured at the opening)

+ Product Details Size - 30"w X 12"h is the size for the duct opening measurement only

much more than required 700 PSI for R410

36"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 11.75"h] w6h6 Secure Locking Mechanism – Features+ Product Details Size 36"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 11. 75" Height Weather and Pest Proof These louvers are especially designed to prevent water from entering your home, and with a built in back 1 2" mesh they also protect you from annoying rodents like mice, rats, birds, and squirrels High Quality Aluminum The premium durable aluminum will never rust and it will never