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Classic StretchWall® specifications
ASTM E-84 (81a), Class-A rated
Classic StretchWall® and stretched panels have been tested as an assembly utilizing complete sections of building-standard Sheetrock® gypsum board. FR wood grounds, fiberglass, and inherently flam-retardant fabrics or natural fabrics have been flame tested to meet E-84 (80a) test requirements.
FR test specimen
Classic StretchWall® and stretched panels (SP) with Guilford acoustically transparent FR polyester fabrics —ASTM E-84 (80a) (+/- results):
Flame-spread value 5
Smoke development value 20
Flame-spread and smoke-development values vary with different fabrics, frame, and infill.
| NRC 125 Hz ⅜ in. | 0.55 |
| NRC 125 Hz 1 in. | 0.85 |
| NRC 125 2 in. | 1.00 |
| ⅜ in. sample: | 1 in. sample: | 2 in. sample: | |
| 125 Hz | 0.04 | 0.00 | 0.53 |
| 250 Hz | 0.21 | 0.44 | 0.78 |
| 500 Hz | 0.57 | 0.91 | 1.20 |
| 1000 Hz | 0.69 | 1.01 | 1.09 |
| 2000 Hz | 0.72 | 1.07 | 1.01 |
| 4000 Hz | 0.82 | 0.91 | 1.04 |
2-in. Classic StretchWall® has achieved an NIC “A” rating of 27’ for an integrated acoustical divider. (Performance varies with the fabric and fiberglass densities and thicknesses.)
One-year warranty
Classic StretchWall® and stretched panels will remain dimensionally stable and not sag or distort due to normal variances of temperature and/or humidity for one year from the date of substantial completion, provided that mechanical systems remain in proper working order.
Guarantees are in effect provided that sufficient time has been allowed during installations for on-site fabric curing. Fabrics will be guaranteed to be installed with the grain, patterns, and seams level, plumb, and true.
(Full warranty details available upon request.)