High quality Acoustic suspended ceiling Ethiopia

USG Ceiling Tile Quality Certificate
Product Name: 15mm ImpressionsTM ClimaPlusTM Acoustical Ceiling Tile
Items Numbers Covered: 903, ME903, 904, ME904, 905, ME905, 908, ME908, 916, ME916,
911, ME911
The above listed USG ceiling tile has been tested to meet or exceed the following minimum performance
requirements:
Noise Reduction Coefficient (NRC)1 0.60
Ceiling Attenuation Class (CAC)2 33 (903, ME903, 905, ME905, 916, ME916), or
35 (904, ME904, 908, ME908, 911, ME911)
Thermal resistance (R)3
1.7 hr-?F-ft2/Btu
Light Reflectance (LR)4 0.86
Surface Burning Characteristics5 Class A
TEST METHOD AND FACILITY INFORMATION
1. Noise Reduction Coefficient (NRC) is tested in specific conformance to the requirements of the
ASTM C423-09a, ?Standard Test Method for Sound Absorption and Sound Absorption
Coefficients by the Reverberation Method? using E-400 sample mounting method. The test
facility is located at USG Corporate Innovation Center (700 N Highway 45, Libertyville, IL 60048,
USA), accredited by the U.S. Department of Commerce, National Institute of Standards and
Technology-National Voluntary Laboratory accreditation program for selected test methods in
acoustics including the above-mentioned test.
2. Ceiling Attenuation Class (CAC) is tested in specific conformance to the requirements of the
ASTM E1414-06, ?Standard Test Method for Airborne Sound Attenuation between Rooms
Sharing a Common Ceiling Plenum?. CAC class is obtained per ASTM E413-04. The test facility is
located at USG Corporate Innovation Center (700 N Highway 45, Libertyville, IL 60048, USA),
accredited by the U.S. Department of Commerce, National Institute of Standards and
The information contained in this document are privileged and confidential. This report shall not be
reproduced or distributed without written consent from USG Interior. Page 1
USG Ceiling Tile Quality Certificate
Technology-National Voluntary Laboratory accreditation program for selected test methods in
acoustics including the above-mentioned test.
3. Thermal resistance value is tested according to the to the requirements of the ASTM C518,
?Standard Test Method for ?Steady-State Thermal Transmission Properties by Means of the
Heat Flow Meter Apparatus?. The test is performed at NETZSCH instruments, Inc. (37 North
Avenue, Burlington, MA 01803, USA) utilizing a Netzsch Model Lambda heat flow meter
instrument at a mean temperature of 74?F (representing a typical application condition of the
ceiling tile products).
4. Light reflectance (LR): LR is tested in specific conformance to the requirements of per ASTM
E1477-98a, ?Standard Test Method for Luminous Reflectance Factor of Acoustical Materials by
Use of Integrating-Sphere Reflectometers?.
5. Surface burning characteristics test is conducted at Underwriter?s Laboratories, Inc. (UL, 333
Pfingsten Road, Northbrook, IL 60062, USA) in accordance with Standard ASTM E84 ?Test for
Surface Burning Characteristics of Building Materials?. Class A Surface Burning Characteristics
Classification is defined by ASTM E1264, ?Standard Classification for Acoustical Ceiling Products?,
as a Flame Spread index maximum 25 and a Smoke Developed index maximum 50.