Witten 306MWH Replacement Auto Foundation Vent, White Winter_Items Open size: 48” Diameter x

Open size: 48” Diameter x 29-1/4” H

This will safeguard your family from unsafe levels of lead accumulatiion

Not only does this hat keep you protected from the sun

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

Witten 306MWH Replacement Auto Foundation Vent, White Winter_Items Open size: 48” Diameter xHighlights: 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