16"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 25.75"h] Insulated Line Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 9 3/4" x 1"

Actual Filter Size – 23 3/4"w x 9 3/4" x 1"

4" X 12" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

actual front end outer dimensions are approximately 14 5/8" width X 8 5/8" height

heat pump and centralized air ducted units

16"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 25.75"h] Insulated Line Actual Filter Size – 25+ Product Details Size 16"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 25. 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