All products made from AISI 434 Stainless SteelOther Alloys available - AISI 316L and AISI 430Controlled Fiber Sizes - Ranging from 40 to 130 MicronsControlled Basis Weights - Offered in grams per square meterGood for sound attenuationExcellent Heat Resistance - Up to 700 cSpecific weight tolerancesDurability