Studio : Witten Automatic Vent Publisher : Witten Automatic Vent Product Description With 18 in. lintel for new construction. High density thermo-plastic construction. Automatically opens at 70 degrees Fahrenheit closes at 40. Key working mechanism bi-metal coil fully enclosed by protective cover.Features. No electrical hook-up required.. Stainless steel and corrosion resistant metal parts.. 62 square inches net free area.. Heavy-duty aluminum mesh screen front and back.. Color - Gray.. Size - 8 x 16 in.. Dimension - 16 x 17.25 x 18 in.. Item Weight - 1.42 lbs. 0
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