Witten A-ELBLACK Plastic Auto Foundation Vent Crystal Drain Cleaners CSA Approved

CSA Approved

Influenza A (H1N1)

Material Specification: ASTM F876/F877

Stores more bits with large capacity case

Witten A-ELBLACK Plastic Auto Foundation Vent Crystal Drain Cleaners CSA ApprovedAutomatically 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