25"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 26.75"W X 31.75"H] Adjustable Return Design – Cubic core eggcrate MFACRA88W1 Condensate Pump Product Details Size 20
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25"W X 30"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 26.75"W X 31.75"H] Adjustable Return Design – Cubic core eggcrate MFACRA88W1 Condensate Pump Product Details Size 20 Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95% height: 20px