PVC Coated negative Pressure Air Duct is made of high-strength PVC cross net fabric, it is flame retardant and antistatic .

BAOFENG PVC Coated Air Duct have awarded certification which issued by NATIONAL COAL MINE RELATIVE PRODUCTS QUALITY SUPERVISION BUREAU ABOUT SECURITY OF DUST PREVENTION AND VENTILATING PRODUCTS AND HAVE GOT THE

"SAFETY CERTIFICATE OF APPROVAL FOR MINING PRODUCTS"

Connection: Use slide fastener/ ZIPPER