Sonex Classic™ and Junior™ Wall Panel
Technical Specifications
Physical Data — willtec
Material
Open-cell melamine-based foam
Density
0.5 to 0.7 lbs./cubic ft. (ASTM D3574-77)
Long-Term Service Temperature
302 degrees F
Fire Resistance
Class 1 per ASTM E 84 (all finishes)
Meets UL 1715 (willtec natural)
Flame Spread per ASTM E 84
Natural: 5
Painted: 10
colortec™: 5
Smoke Density per ASTM E 84
Natural: 50
Painted: 10
colortec: 90
Microbial Growth
Passes UL 181, section 11
Fungus Resistance
Rating 0 per ASTM G21
Finishes
Natural (white), painted or colortec
Sound Absorption
Finish
Thickness
Coefficients per ASTM C423-90a
125Hz
250Hz
500Hz
1kHz
2kHz
4kHz
NRC
Mounting
Type
Natural (White)
2"
0.05
0.31
0.81
1.01
0.99
0.95
0.80
A
Painted (Charcoal, Beige, Brown, Blue and Light-Grey)
2"
0.17
0.33
0.85
1.03
1.08
1.06
0.80
B
colortec
2"
0.05
0.31
0.81
0.96
0.97
0.97
0.75
A
Installation Information
Make sure both the panels and the surface to which the panels are being applied
are free of dust and dirt. If adhering to a metal surface, use a degreaser.
Apply a line of adhesive around the perimeter of the panel approximately 1" from the
edge.
Apply a line of adhesive from opposite corners through the center of the panel, creating
an "X"
Press panel into place and hold for 5 seconds. Then pull panel away to allow adhesive to
become tacky. Last, press the panel back into position and hold again for 5 seconds.
Wear clean cotton/canvas gloves for installation.
Use a sharp razor or fixed-blade knife and a metal straigh edge to cut panels. For best
results, cut panels on flat side.
Overhead installations may require additional adhesive and mechanical support to ensure
a strong enough bond.
