20 in. Width x 18 in. Height
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(1)
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![20" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 22.5"w X 20.5"h]](http://cdn.shopify.com/s/files/1/0081/8213/6898/products/1614_01_f7994c7b-2ea3-47ce-9f12-fc3a903867b3_{width}x.jpg?v=1571710171)
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![20" X 18" 2-Way Vertical AIR SUPPLY GRILLE - DUCT COVER & DIFFUSER - Flat Stamped Face - White [Outer Dimensions: 21.75"w X 19.75"h]](http://cdn.shopify.com/s/files/1/0081/8213/6898/products/148w2_1_6c130ef2-959e-4ec7-876e-d6d7fbaeda17_{width}x.jpg?v=1571710159)
$47.99
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![20" X 18 Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - ceiling Recommended - HVAC DUCT COVER - Flat Stamped Face - White [Outer Dimensions: 22.5"w X 20.5"h]](http://cdn.shopify.com/s/files/1/0081/8213/6898/products/2014_0b0932c3-bbfc-4c74-bcfa-08b4fab0c251_{width}x.jpg?v=1571710133)
$58.95
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