Product Description-These 12"x12" square polyurethane foam panels are ideal for extreme noise sources, low bass noise, impact noise, or for anechoic sound chambers. Available in standard thickness, with custom thicknesses optional. Their extreme thickness forces the noise wave to travel several more times through the material before it can escape. This creates maximum dissipation.

Open cell polyurethane acoustic foam blocks, measuring 12" x 12" square with standard widths of 6" or 8". Anechoic wedge shape design is ideal for attacking extreme low and high frequency sound. Ideal product for anechoic chamber applications. The ultimate in energy absorption with 100% echo reduction.

Tips:

Rotate each panel to be perpendicular to the next. This forces the noise within each channel to meet the neighboring piece head on. For anechoic chambers, cover 100% of all wall, ceiling and floor if possible. For industrial, extend to 12-15' beyond the shadow of the noise source against a nearby wall. For noise sources not near a wall, create a movable wall of verticle plywood on a stand, and mount the MAX material to its face.

Installation Techniques:

Most customers glue these panels to a wall using silicone based caulk. For portability, you could opt to put them up with velcro strips or double stick tape. Cut the foam from the back side with a carpet cutter or utility knife.

The standard installation consists of adhering the MAX Sounds Blocks directly to a wall surface with standard silicone adhesive. To maximize the effects of the foam, customers have mounted the Sound Blocks to plywood, and attached the plywood to firring strips linings the chamber walls. This creates a dead air space behind the foam. For treating transmission (keeping outside noise out, and inside noise in) see our dB-Bloc barrier material. This could be adhered to the chamber walls prior to installing the foam.

WARNING: Urethane foam, when exposed to heat or ignition sources, may bum. Once ignited, urethane foams can bum rapidly, consuming a high rate of oxygen and releasing hazardous gases, toxic fumes and smoke. In an enclosed space, this may prove fatal. Consideration must be given to the flammability issue when using this product. Do not expose urethane foam to an atmosphere that will contaminate it, nor to ignition or hear sources that may cause it to bum.

Physical Properties:

• Density: pounds / cubic foot 1.8-2.2kg / cubic meter 28.8-35.2
• I.F.D. : @ 25%
• Compression: (2") 20 pounds min. 50 mm 178 N min.
• Tear Strength: pounds/inch 2 min. newtons / meter 350 min.
• Elongation: % 200 min.
• Compression Sets: 90%, 22 hrs. 158- F 15% max.
• Tensile Strength: Compression (2") 20 pounds min. 50 mm 178 N min.
• Die Cutability: Very Good
• K-Factor :@ 30* F 0.23-0.28.
• Operating Temperature: -400 F to +3000 F
• Cell Count: PPI 36-45
• Flammability: UL94HF-1 Passes

Frequency (Hz)	125	250	500	1K	2K	4K	NRC
Transmission Loss (dB)	.81	.1.63	1.57	1.30	1.45	1.42	1.55
Transmission Loss (dB)	.41	.1.05	1.42	1.36	1.37	1.51	1.30

Applications

• Anechoic Sound Test Chambers
• Dynamometer rooms
• Impact Noise Sources (Punch Press)
• Low Bass Noise Sources
• Sound Control Booths
• Sound Testing Facilities
• Musical Instrument Testing
• Free Fiels Microphone Calibration

• Check further Web site pages on any of those products for more information, application photos, spec sheets, color charts, and references
• Measure your room dimensions
• Select color
• Contact NetWell