View 2 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"

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View 1 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"View 2 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"View 3 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"View 4 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"View 5 of 24" x 12 " Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover Diffuser - Outer dimensions - 26 1/2" x 14 1/2"