Skyline® LP - Expanded Polystyrene Optimized Two Dimensional Primitive Root Diffusor
A The Expanded Polystyrene Optimized Two Dimensional Primitive Root Diffusor shall be the model Skyline® LP as manufactured by RPG® Diffusor Systems, Inc., Upper Marlboro, MD 20774. Tel: 301-249-0044, Fax: 301-249-3912.
B The Expanded Polystyrene Optimized Two Dimensional Primitive Root Diffusor shall be molded from high density Noryl flame-retardant grade high density expanded polystyrene.
C The Expanded Polystyrene Optimized Two Dimensional Primitive Root Diffusor shall work on the two dimensional optimized primitive-root reflection phase grating principle, using an array of rectangular phase blocks. The heights of the phase blocks shall be based on the optimized primitive-root number theory sequence based on prime 157. The diffusing panels can be installed in an optimized, randomized or same orientation.
D Absorption Coefficients and Noise Reduction Coefficient for the product shall be measured according to the test methods as defined by ASTM C 423 and ASTM E 795. Random incidence Absorption Coefficients for the product in an A-mounting shall be as follows:
125Hz |
250Hz |
500Hz |
1000Hz |
2000Hz |
4000Hz |
NRC |
0.05 |
0.30 |
0.16 |
0.20 |
0.15 |
0.20 |
0.20 |
Random incidence Absorption Coefficients for the product in an E400-mounting shall be as follows:
125Hz |
250Hz |
500Hz |
1000Hz |
2000Hz |
4000Hz |
NRC |
0.37 |
0.19 |
0.20 |
0.28 |
0.27 |
0.26 |
0.25 |
F Noryl flame retardant grades meet the requirements of FMVSS-302 standards.
G The Expanded Polystyrene Optimized Two Dimensional Primitive Root Diffusor shall be supplied in a flat white painted finish.
H The overall dimensions shall be 23-5/8"(H) x 23-5/8"(W) x 4-7/8"(D) and weigh no more than 4 pounds.
CSI Specifications
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2000, RPG Diffusor Systems, Inc. |