Line your engine compartment to reduce noise levels.This flexible composite combines the sound-absorbing properties of open-cell polyurethane foam and the noisebarrier capabilities of high-density PVC vinyl sheeting. The 3/32" flexible vinyl sheet is fused between twolayers of foam—an exterior (decoupler”) layer and an interior (absorber”) layer. The interior layer is thencovered with a thin film (2.5 mil) of mylar, reinforced with elastomer-coated fiberglass for surface heatprotection and enhanced sound absorption. The overall effect is a dramatic noise reduction when compared withsingle-layer foam barriers. Material is fire retardant (not fireproof) up to 225F. Available in two overallthicknesses. Decoupler thickness is 1/4"; Absorber thickness is 1/4" on the 1/2" kit, 3/4" on the 1" kit.Peel-and-stick backing for easy installation. When using overhead, nail hangers should be used.Key featuresMore effective than single-layer barriersFire-retardant (not fireproof) up to 225FAvailable in two thicknessesPeel and stick backing for easy installationUnaffected by dirt, moisture, lubricants and fuelsAcoustic grade foam, with high density leaded vinyl barrierProvides thermal insulationSpecificationsDecoupler thickness is 1/4"Absorber thickness is 1/4" on the 1/2" kit, 3/4" on the 1" kitWhen using overhead, nail hangers model (216874) should be used