Witten 306MWH Replacement Auto Foundation Vent, White Winter_Items Not only does this hat

Not only does this hat keep you protected from the sun

An oversized chemical reservoir and large 10" no-flat tires for ease of moving up and down stairs

A magnified measuring system with an adjustable measuring scale allows accurate setup with any bit

This will safeguard your family from unsafe levels of lead accumulatiion

Witten 306MWH Replacement Auto Foundation Vent, White Winter_Items Not only does this hatHighlights: Color: White Replaces old style manual vents Fits standard 8" x 16" vent openings Automatically opens at 70 degrees Fahrenheit and closes at 40 (approximately) The key mechanism, bi metal coil, fully enclosed in protective cover Stainless steel compression spring with 1 adjustable screw for easy installation 65 square inch net free area High density thermo plastic construction Stainless steel and corrosion resistant metal parts Heavy duty