24"w X 12"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return 14" Round Duct Pipe All of these grills have

All of these grills have dampers

'block' : 'none'

actual front end outer dimensions are approximately 18 5/8" width X 12 5/8" height

+ Product Details Size - 26"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 10"h is the size for the duct opening measurement only

24"w X 12"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return 14" Round Duct Pipe All of these grills have+ Product Details Size 24"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are 25" Width X 13" 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