18"w X 18"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return 10" Round Duct Pipe /* more readable bullets */

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+ Product Details Size – 14"w X 16"h is the size for the duct opening measurement only

75" width X 31

Actual Filter Size – 27 3/4"w x 27 3/4" x 1"

Actual Filter Size – 15 3/4"w x 31 3/4" x 1"

18"w X 18"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return 10" Round Duct Pipe /* more readable bullets */+ Product Details Size 18"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are 19" Width X 19" 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