8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 17.75"h] w14h14 + Product Details Perfect Fit 4" Round Duct Pipe Product Details Size The SHEASC10W1-HP

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

const dt = event

ensuring it fits most standard thermostat models

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 12" or 12" x 8" duct opening (measured at the opening)

8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 9.75"w x 17.75"h] w14h14 + Product Details Perfect Fit 4" Round Duct Pipe Product Details Size The SHEASC10W1 HP + Product Details Perfect Fit & Easy Sizing Designed for a 22" x 22" duct opening (measured at the opening) const dt = event