Working in closed areas? Don't take chances with your lungs! These Hobbyair systems deliver a steady supply of fresh, outside air while you work inside. The lightweight facemask, beltline hookup and snap-tight fittings combine to make this respirator system not only safe but comfortable and easy to wear. Fresh, ambient air is fed from a remote two-stage pump, via 40 feet of FDA- approved, kink-resistant hose, to the silicone rubber facemask. Motor runs on standard 110V AC current. All fittings are made of stainless steel and brass. NIOSH-approved units. Limited 1 year manufacturer's warranty.