ok guys this is the stuff for sound dampening in a marine use where you have 1.2 inches of room for this foam
here is the specs from the website you can look at it here
http://www.soundabsorber.com/ but read this below
Acoustical Faced foam for sound absorbtion
Faced Acoustical Foam are a flexible open-celled foam that is Ether based. The Faced Acoustical Foamr is resistant to heat, resistant to moisture, and resistant to chemicals. Faced Acoustical Foam has an NRC (Noise Reduction Coefficient) rating of .75 out of a possible 1. In addition to the Faced Acoustical Foam coming in a variety of thicknesses, it also comes with a choice of coatings/facings. Our most popular choice is the white polyurethane faced acoustical sound absorber foam which is a good solution in the following applications: acoustical insulation, thermal insulation in marine applications, and architectural applications where low flame spread and smoke are requirements.
Faced Acoustical Foam Facing Options
White Polyurethane Film Facing BlackPolyurethane Facing Gray Tedlar® Film Facing
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Faced Acoustical Barrier Foam
Faced acoustical sound absorber barrier is a combination of dense closed-cell vinyl foam and a barrier composite. There are a variety of facings that we carry. The foam offers transmission loss properties over a broad frequency range. Commonly used in vehicle applications, this foam is designed for applications where transmission loss is to occur over a broad frequency range. The barriers come in 54" X 72" sheets.
Faced Acoustical Sound Absorber Foam Properties
Faced Acoustical Sound Absorbing Barrier Properties
Variety of Thicknesses
NRC Rating of .75 out of possible 1
Option of Four Facings
UL94-HF1 Fire Rated
Stock Size: 4' x 8' x 1" Thickness of .375"
Option of Three Facings
Sound Absorber and Blocker
Frequently Used in Transportation Industry
Sound Barrier Facing Options
Vinyl Barrier Composite laminated on Acoustic Foam
Applications for Faced Sound Absorbers
Marine Architectural Applications
Engine Rooms Generators Load Machinery Sound Isolation
Home Theaters Engine Compartments Industrial Partitions Appliances
Swimming Complexes Ice Arena Complexes HVAC Restaurants
Acoustical Insulation Residences Wall Panels Schools
Sound Absorber Noise Absorber Boats Studios
Libraries Studios Office Buildings Gymnasiums
Churches Auditoriums Vocal Rooms Boiler Rooms
Recording Studios Entertainment Rooms Compressors Motor Homes
Radio Broadcasting Automobiles Isolation Booths Conference Rooms
Commonly used terms referring to Sound Absorber
Sound Absorption Foam Foam Curtain Silencer Foam Noise Damping Materials
Sound Proof Barriers Silencer Foam Noise Reduction Noise Proof Material
Sound Proof Enclosures Noise Control Foam Sound Proof Panels Sound Barrier Material
Sound Absorbing Panels Foam Curtain Closed Cell Foam Insulation Foam Wall Panels
Fire Resistant Sound Proof Sound Proof Foam Acoustical Material Sound Absorbing Material
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