The rear doors are a small door, two doors from the door to help reduce rear areas. The door is a flat, perforated ventilation (Perforate) (with drilled hole size. 4.20 mm. horizontal side pit. 4.76 mm. 4.17 mm) vertical side favorably with holes as a percentage. Not less than 85% of the area, the PHA productivity doors the best ventilation.
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