09510- 2
ACOUSTICAL CEILINGS
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Armstrong World Industries, Inc.
B. CertainTeed.
C. Or Equal.
2.2 ACOUSTICAL PANELS
A. Acoustical Ceiling Panels:
1. Product: Armstrong Fine Fissured, CertainTeed Fine Fissured, Or equal.
Edge: Square Lay-In 15/16 inch.
Color: White.
NRC: 0.55
CAC: 33
Light Reflectance: 0.85
Fire Resistance: Class A (UL)
Anti-Microbial: BioBlock+, BioSheild or Equal.
Size: 24 inches x 24 inches x 5/8 inches.
OANA NAMEYWN
2.3 MATERIALS
A. Components: All main beams and cross tees shall be commercial quality galvanized
steel. Main beams and cross tees are double-web steel construction with type
exposed flange design. Exposed surfaces chemically cleansed, capping pre-finished
galvanized steel in baked polyester paint. Main beams and cross tees shall have
rotary stitching.
1. Structural Classification: ASTM C 635 Heavy Duty.
2. Color: White.
3. Acceptable Product: Prelude ML 15/16" Exposed Tee as manufactured by
Armstrong World Industries, Inc.
2.4 ACCESSORIES
A. Attachment Devices: Size for five times design load indicated in ASTM C 635,
B.
Table 1, Direct Hung unless otherwise indicated.
Wire for Hangers and Ties: ASTM A 641, Class 1 zinc coating, soft temper, pre-
stretched, with a yield stress load of at least time three design load, but not less than
12 gauge.
Edge Moldings and Trim: Metal of types and profiles indicated or, if not indicated,
manufacturer's standard moldings for edges and penetrations, including light fixtures,
that fit type of edge detail and suspension system indicated. Provide moldings with
exposed flange of the same width as exposed runner.
D. Retention Clips: Corrosion resistant concealed and exposed type hold down clips.
13089K
