... high density fiber glass mat through dyeing.Applications:Black Fiberglass Felt for Heat Preservation is a special material for heat ... reservation, heat insulation and acoustic absorption.Black Fiberglass Felt is used in air conditioning, auto-motor, induction cooker, boiler wall ... : 120gsm to 800gsm.Thickness: 0.2mm-5mm. Black Fiberglass Felt,Black fibre glass blanket, black fiberglass mat