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Acoustical louver for exterior wall intake and exhaust openings. Insulated J-style blades provide high free area, low pressure drop, and excellent noise reduction with best-in-class free area-to-STC balance.

• 6-inch depth
• 31% free area (4 ft. x 4 ft.)
• 799 fpm free area velocity at the beginning point of water penetration
• STC Rating: 10

Acoustical louver for exterior wall intake and exhaust openings. Insulated J-style blades deliver high free area, low pressure drop, and superior noise reduction with best-in-class STC rating.

• 12-inch depth
• 21% free area (4 ft. x 4 ft.)
• 1,108 fpm free area velocity at the beginning point of water penetration
• STC Rating: 18

Acoustical louver for exterior wall intake and exhaust openings. Insulated J-style blades provide high free area, low pressure drop, and effective airborne noise reduction.

• 8-inch depth
• 27% free area (4 ft. x 4 ft.)
• 887 fpm free area velocity at the beginning point of water penetration
• STC Rating: 12