LBM Poly 6X40-B Polyethylene Sheeting Film 40'X100' - Black BF20 Ultrasound is reflected by hard

Ultrasound is reflected by hard surfaces and absorbed by soft surfaces

Night vision lets you see in the dark

bringing back long-lost shine while sealing and protecting against damage such as moisture

Manual external bleed allows for operation without electrical power

LBM Poly 6X40-B Polyethylene Sheeting Film 40'X100' - Black BF20 Ultrasound is reflected by hardHighlights: Color: Black Thickness: 6 mil Width: 40 ft Length: 100 ft Material: Plastic Bulk Plastic Film Used For A Wide Variety Of Applications Covering Items To Vapor Barrier To Lining Under Items Tough, seamless plastic for tough jobs in construction and agriculture Full weight with thickness Marked on each rigid core roll to meet Building Code Specifications Complies with ASTM D 4397 84 WARNING: Cancer and Reproductive Harm www. P65Warnings. ca.