Technical Specifications

Physical Data
Visual Selection Performance Selection Dots represent highest level of performance.
138
Square Lay-in
fine texture
CIRRUS
®
Material
Wet-formed mineral fiber
Surface Finish
Factory-applied latex paint
Fire Performance
ASTM E84 and CAN/ULC S102 surface burning
characteristics. Flame Spread Index 25 or less.
Smoke Developed Index 50 or less. (UL labeled)
ASTM E1264 Classification
Type III, Form 1, Pattern E I
Fire Class A
Sag Resistance
HumiGuard
®
 Plus – superior resistance to sagging
in high humidity conditions up to, but not including,
standing water and outdoor applications.
VOC/Formaldehyde Emissions
Meets CA Dept. of Health Services Standard Practice for
the testing of VOC Emissions and is listed on CHPS High
Performance Products Database for Low-Emitting
Materials.
Anti Mold/Mildew & Bacteria
BioBlock
®
Plus contains an anti-microbial treatment and
provides guaranteed resistance against growth of
mold/mildew and Gram-positive and Gram-negative
odor/stain-causing bacteria for 30 years.
Insulation Value
R Factor – 1.9 (BTU units)
R Factor – 0.33 (Watts units)
30-Year Performance Guarantee & Warranty Information
Details in back of catalog or at armstrong.com/warranty
Application Considerations
Not recommended for rooms containing MRI equipment
Weight; Square Feet/Carton
533, 574 – 1.10 lbs/SF; 48 SF/ctn
LEED
®
Credits
Acoustics Low Emitting
or CHPS
LEED for Schools
Recycled
Content:
Energy Waste Recycled Local Renewable Daylight
Mgmt Content Materials Materials & Views
Location Dependent
Up to 80% armstrong.com/greengenie
65% Pre-consumer;
15% Post-consumer
$$$$$
Square Lay-in 9/16" Angled Tegular 15/16" Angled Tegular
Ultima Plank ShipLap
Long Edge Detail
Ultima Plank ShipLap
K2C2 Short
15/16" Chamford Tegular
Cirrus Profiles Chamfered
Tongue and GrooveConcealed Beveled K4C4
Classic Step Tegular Ultima Plank ShipLap
Long Edge Detail
Ultima Plank ShipLap
Beveled Tegular Short
15/16 Classic Step Tegula
r
~8-ID (99) (drw 10)
9/16" Beveled Tegular 15/16" Beveled Tegular
9/16" Square Cut Tegular 15/16" Square Tegular
9/16" Chamfered Tegular
Cirrus Profiles Chamfered
Concealed
Soft Look Radiused Tegular
9/16" Cubic Graphis
NeoCubic
9/16" Flush Tegular
Ledges
15/16" Flush Tegular
Ledges
9/16" Wrapped Tegular
Graphis Wrapped Linear
and Cubic
9/16" Wrapped Linear and
Mixed Corner “B”
(Flumes, Graphis Linear Corner
& Dots & Squares)
Concealed
Square Edge K4C4
Linear Cubic
Beveled Crossgate
A B
15/16" Vector
C D
15/16" Vector C & D
AB CD
The post-consumer
recycled content of
these items is from
reclaimed ceilings
Suspension Systems
15/16"
Prelude
®
MINERAL FIBER
TechLine
SM
/ 1 877 ARMSTRONG
armstrong.com/ceilings (search: cirrus)
CS-3011-1111
LEED
®
is a registered trademark of the U.S. Green Building Council
All other trademarks used herein are the property of AWI Licensing Company and/or its afliates
© 2011 AWI Licensing Company  •  Printed in the United States of America
UL Classied
Grid Drawings
Cat. pgs. 226-228
or armstrong.com/
catdwg
Acoustics Fire
Rating
Light
Reflect
Sag
Resist
Anti-
Microbial
Durable Recycle
Program
Edge
Profile
Item
No.
Dimensions NRC CAC
CIRRUS Square Lay-in
15/16"
Square Lay-in
1 574 2' x 2' x 3/4" 0.70 35 Class A 0.86 HumiGuard+ BioBlock+ Standard
Yes
574M
574HRC
600 x 600 x 19mm
2' x 2' x 3/4"
 •  •
1 533 2' x 4' x 3/4" 0.70 35 Class A 0.86 Standard Standard
533M
533HRC
600 x 1200 x 19mm
2' x 4' x 3/4"
 •