Automatically opens at 75°, closes at 35°. Bi-metal coil fully enclosed in patented protection. High-density thermo plastic construction. Stainless steel and corrosion resistant metal parts. Heavy-duty aluminum mesh screen in front and back.
Used in new construction or remodeling applications 1/4" molded screen for insect protection. 50 sq. ft. net-free ventilation area. includes optional fixed louver.