The main benefits of a supply door grille are: Ventilation: Allows air to flow freely between rooms or outdoors, ensuring fresh and clean air. Temperature Control: A supply door grille allows you to regulate indoor temperatures, especially with air conditioning systems. Odor Reduction: By allowing air to flow through the supply door grille, you can reduce unpleasant odors in your rooms. Moisture Reduction: A supply door grille allows air to circulate, which can help reduce moisture and mold in your rooms. Dimensions: 460 mm x 135 mm 430 mm x 115 mm / mounting surface dimension