36 in. Width x 18 in. Height

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36" X 18" Air Vent Return Grilles - Sidewall and Ceiling - Steel
36" X 18" Air Vent Return Grilles - Sidewall and Ceiling - Steel
$63.95
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(2)
 
36" X 18" Steel Return Air Filter Grille for 1" Filter Removable Face/Door
36" X 18" Steel Return Air Filter Grille for 1" Filter Removable Face/Door
$89.99
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(3)
 
36" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter
36" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter
$89.95
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36" X 18" Steel Return Air Filter Grille for 1" Filter Fixed Hinged
36" X 18" Steel Return Air Filter Grille for 1" Filter Fixed Hinged
$99.95
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(1)