USG
Notes: Item 99133 (rectangle). Halcyon fiberglass material, flat panel absorbing sound on face and exposed back side; two-sided absorption rated 1.20 sabins/sq ft. NRC 0.95 (confirmed via negwer.com distributor page and corroborating listings). Rectangle panel size 3'10"x7'10"x1 in (~46x94 in) = ~30 sq ft; also offered in other shapes/sizes not itemized here. Ships 2 panels/kit with mounting hardware.
NRC per ASTM C423. Data retrieved 2026-07-02 from the manufacturer source page.