18"w X 10"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return Round Damper Ring + Product Details Size –

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

9% Pure Copper meeting ASTM B280 standards

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

If your hole is 14" wide by 20" tall

18"w X 10"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return Round Damper Ring + Product Details Size –+ Product Details Size 18"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are 19" Width X 11" Height Design special "V" shaped louvers ensure 100% view block while ensuring easy un restricted air flow Installation Location Wall or door mount door thickness up to 32mm anodised finish smooth & beautiful High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving