This grille box is designed to fit over a standard 600 x 600 return air grill. Supplied un-insulated with no flange.
Actual size is 595 x 595 x 50mm overall.
This grille box is designed to fit over a standard 600 x 600 return air grill. Supplied un-insulated with no flange.
Actual size is 595 x 595 x 50mm overall.
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