12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 31.75"h] Compatible with Duct 8" Actual Filter Size – 11 Insulation Black Foam Tape Sheet Metal/Adjustable Elbow CRG1234

Actual Filter Size – 11 3/4"w x 11 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 36" OR 36" x 26" duct opening (measured at the opening)

Noise free components - no vibrating louvers etc

+ Product Description Introducing our 24" Wooden Corner Baseboard Grille - a sophisticated addition to elevate your HVAC system and interior decor

12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 13.75"w x 31.75"h] Compatible with Duct 8" Actual Filter Size – 11 Insulation Black Foam Tape Sheet Metal Adjustable Elbow CRG1234 Actual Filter Size – 11 3 4"w x 11 3 4" x 1" + Product Details Perfect Fit & Easy Sizing Designed for a 26" x 36" OR 36" x 26" duct opening (measured at the opening)