24"w X 18"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return ceiling Actual Filter Size – 19

Actual Filter Size – 19 3/4"w x 27 3/4" x 1"

Actual Filter Size – 33 3/4"w x 9 3/4" x 1"

The total outer size of this grille is the listed size plus plus 2 and 5/8"

How To Measure A Grille

[Outer Dimensions: 16

24"w X 18"h Aluminum Privacy Door HVAC Air Grille - "V" Shaped Louvers Ensure 100% View Block - Supply or Return ceiling Actual Filter Size – 19+ Product Details Size 24"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are 25" 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