Replaces old style manual vents. Fits standard 8 x 16 in vent openings. Automatically opens at 70 deg F and closes at 40 (approximately). The key mechanism, Bi-metal coil, fully enclosed in protective cover. Stainless steel compression spring with one adjustable screw for easy installation. 65 sq-in net-free area. High-density thermo plastic construction. Stainless steel and corrosion-resistant metal parts. Heavy-duty aluminum mesh screen, front and back. No electrical hook-up required. 8 x 16 in.
Manufacturer: WITTEN Model Number: B-E BROWN (MB) UPC: 008661306028
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