This is an exhaust vent and must be used in conjunction with adequate intake vents for proper operation. Slant-back style, self-flashing roof mounted attic exhaust vent. Additional screen for increased weather protection. Painted units are embossed for extended paint life, durability, and blended appearance with shingles. Features a bird-proof construction, louvered sides are seamed to the top and the top is riveted securely to the base flashing; three louvered sides open upward to prevent shingle discoloration; weather-tight collar, seamed to the base flashing; and large nailing flange.