... Weight 180-320 g/m2 3.Thickness,5-25mm Supply Air Conditioning Filter Media , Synthetic FIber Features1.Using polyester, polyamide, nylon, etc ... medium-efficiency filter, as well as filtration of return air in central air conditioning system.Common SizeGP100: 5mmt×2m×50m,GP200: 10mmt×2m×20m ...