Witten A-ELBLACK Plastic Auto Foundation Vent Metal Connectors Kills viruses

Kills viruses

Saucer Included: No

Mounts fan to a cross member secured between ceiling joist

Width case : 1-1/8"

Opening : 2-1/8"

Witten A-ELBLACK Plastic Auto Foundation Vent Metal Connectors Kills virusesAutomatically opens at 70 degrees Fahrenheit, closes at 40 (approximately). Key working mechanism, bi metal coil, fully enclosed by protective cover. Heavy duty aluminum mesh screen, front and back. 8" x 16". No electrical hook up required. Highlights: 62 square inches net free area With 18" lintel for new construction Fits standard 8" x 16" vent openings High density thermo plastic construction Stainless steel and corrosion resistant metal parts