18 in. Width x 4 in. Height

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18" X 4" Air Vent Return Grilles - Sidewall and Ceiling - Steel
18" X 4" Air Vent Return Grilles - Sidewall and Ceiling - Steel
$27.11
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(12)
 
18" X 36" Steel Return Air Filter Grille for 1" Filter Removable Face/Door
18" X 36" Steel Return Air Filter Grille for 1" Filter Removable Face/Door
$108.28
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(11)
 
18" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling
18" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling
$42.39
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18" X 4" 2-Way Vertical AIR SUPPLY GRILLE - DUCT COVER & DIFFUSER - Flat Stamped Face
18" X 4" 2-Way Vertical AIR SUPPLY GRILLE - DUCT COVER & DIFFUSER - Flat Stamped Face
$30.14
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(11)