c.
Pattern:
[_____].
d.
NRC Grade: Minimum [0.50] [_____] when tested on Mounting Type
E-400 of ASTM E 795.
e.
Light Reflectance:
LR-1, 0.75 or greater.
f.
Nominal Size: [300 by 300] [600 by 600] [600 by 1200] mm [12 by
12] [24 by 24] [24 by 48] [_____] inches.
g.
Edge Detail:
[Square] [Beveled].
h.
Joint Detail:
[Trimmed and butted] [Kerfed and rabbeted].
2.1.5
Humidity Resistant Composition Units
a.
Type: Non-asbestos mineral or glass fibers bonded with ceramic,
moisture resistant thermo-setting resin, or other moisture
resistant material and having a factory applied white paint
finish. Panels shall not sag or warp under conditions of heat,
high humidity or chemical fumes.
b.
Class:
A, flame spread 25 or less.
c.
Pattern:
[_____].
d.
NRC Grade: Minimum [0.50] [_____] when tested on Mounting Type
E-400 of ASTM E 795.
e.
Light Reflectance:
LR-1, 0.75 or greater.
f.
Nominal Size: [600 by 1200] [_____] mm [24 by 48] [_____] inches.
g.
Edge Detail:
Square.
2.1.6
Metal Faced Composition Units
a.
[Type V (Steel facings with non-asbestos mineral composition
absorbent backing).]
[Type VI (Stainless steel facings with non-asbestos mineral
composition absorbent backing)]
[Type VII (Aluminum facings with non-asbestos mineral composition
absorbent backing) with [anodized] [baked enamel] [acrylic] finish
color [white] [_____].]
b.
Class:
A, flame spread 25 or less.
c.
Pattern: [_____].
d.
Noise Reduction Coefficient (NRC) Grade: Minimum [0.75] [____] in
open office areas. Minimum [0.60] [____] in conference rooms,
executive offices, teleconferencing rooms, and other rooms as
designated. Minimum [0.50] [____] in all other rooms and areas.
Base the tested NRC value on Mounting Type E-400 of ASTM E 795.
e.
Light Reflectance:
LR-1, 0.75 or greater.
SECTION 09510
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