RIVERBANK ACOUSTICAL LABORATORIES

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1 FOR: Wichita, KS Sound Transmission Loss CONDUCTED: (Report Revised ) Page 1 of 10 ON: Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall TEST METHOD Riverbank Acoustical Laboratories is accredited by the U.S. Department of Commerce, National Institute of Standards and Technology (NIST) under the National Voluntary Laboratory Accreditation Program (NVLAP) as an ISO 17025:2005 Laboratory (NVLAP Lab Code: ) and for this test procedure. The test reported in this document conformed explicitly with ASTM E90-09 (2016): "Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements." The single number rating of the specimen was calculated according to ASTM E413-16: "Classification for Rating Sound Insulation." A description of the measuring procedure and room qualifications is available upon request. DESCRIPTION OF THE SPECIMEN The test specimen was designated by the manufacturer as Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall. A full inspection performed on the test specimen by Riverbank personnel verified the manufacturer's description. Rubber and Aluminum Seal Material ID: PCS-1C Installed Dimensions: mm (96 in.) x 50.8 mm (2 in.) Rubber Seal: mm (0.875 in.) thick Aluminum Member: 35.0 mm (1.375 in.) thick Weight: 4.88 kg (10.75 lbs.) Applied: One on each side of filler wall Sealant Material: Silicone Building Sealant Material ID: Dow 795 Applied: Used to adhere both PCS-1C elements to filler wall opening, each on aluminum side only (see Figure 06)

2 Page 2 of 10 Physical Measures Overall Dimensions: 1.22 m (48.00 in.) wide by 2.44 m (96.00 in.) high Overall Thickness: mm (11.75 in.) Overall Weight: kg ( lbs.) Transmission Area: 2.97 m 2 (32.00 ft 2 ) Mass per Unit Area: kg/m 2 (16.76 lbs./ft 2 ) Test Aperture Size: 1.22 m (4.0 ft.) x 2.44 m (8.0 ft.) Sealed: Entire periphery (both sides) with dense mastic Filler Wall Overall Dimensions: 1.22 m (4.0 ft.) x 2.44 m (8.0 ft.) Overall Thickness: mm (11.75 in.) Overall Weight: kg (555 lbs.) Aperture: 50.8 mm (2 in.) x mm (96 in.) slot in the center The filler wall had 3 layers of gypsum (both sides) and was filled with insulation. Filler transmission data can be found in Appendix B (See Figures 3 and 4) Test Environment Source Room Volume: m 3 ( ft 3 ) Temperature: 21±0ºC (70±0ºF) Humidity: 50±0% Receive Room Volume: m 3 ( ft 3 ) Temperature: 21±0ºC (69±0ºF) Humidity: 52±1% Requirements Temperature: 22º C +/- 2 C, not more than 3 C change over all tests. Humidity: 30% RH, not more than +/- 3% change over all tests.

3 Page 3 of 10 Figure 1 Specimen mounted in the test opening. Figure 2 Detail of the PCS-1C.

4 Page 4 of 10 Figure 3 Detail of the filler wall Figure 4 Detail of the Filler wall.

5 Page 5 of 10 Figure 5 Detail of the silicone sealant box (shows material details) Figure 6 Detail of the silicone sealant installed to aluminum side

6 RIVERBANK ACOUSTICAL LABORATORIES A L I O N Technical Center Page 6 of 10 TEST RESULTS Sound transmission loss values are tabulated at the eighteen standard frequencies. A graphic presentation of the data and additional information appear on the following pages. The precision of the transmission loss test data is within the limits set by the ASTM Standard E90-09 (2016). FREQ. T.L. C.L. DEF FREQ. T.L. C.L. DEF STC=57 ABBREVIATION INDEX FREQ. = FREQUENCY, HERTZ, (cps) T.L. = TRANSMISSION LOSS, db C.L. = UNCERTAINTY IN db, FOR A 95% CONFIDENCE LIMIT DEF. = DEFICIENCIES, db<stc CONTOUR (SUM OF DEF = 23) STC = SOUND TRANSMISSION CLASS Tested by Marc Sciaky Experimentalist Report by Miles Possing Acoustician Approved by Eric P. Wolfram Laboratory Manager Digitally signed by Eric Wolfram DN: cn=eric Wolfram, o=alion Science and Technology, ou=riverbank Acoustical Laboratories, =ewolfram@alionscience.co m, c=us Date: :53:05-05'00'

7 Page 7 of 10 SOUND TRANSMISSION REPORT Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall STC=57 TRANSMISSION LOSS SOUND TRANSMISSION LOSS CONTOUR

8 Page 8 of 10 APPENDIX A: Extended Frequency Range Data Specimen: Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall (See Full Report) The following non-accredited data were obtained in accordance with ASTM E90-09 (2016), but extend beyond the defined frequency range of 100Hz to 5,000Hz. These unofficial results are representative of the RAL test environment only and intended for research & comparison purposes. 1/3 Octave Band Sound Center Frequency Transmission Loss Uncertainty (Hz) (db) (95% ±)

9 Page 9 of 10 APPENDIX B: Filler-Corrected Results Specimen: Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall (See Full Report) The following data were corrected for filler wall data in accordance with ASTM E90-09 (2016) Appendix A3 and ASTM E Composite Wall Area: 2.97 m 2 (32.00 ft 2 ) Specimen Area: 0.12 m 2 (1.32 ft 2 ) Filler Wall Area: 2.85 m 2 (30.68 ft. 2 ) 1/3 Octave Band Filler Wall Composite Sound Adjusted Sound Center Frequency Transmission Loss Transmission Loss Transmission Loss (Hz) (db) (db) (db) STC= 44

10 Page 10 of 10 APPENDIX C: Instruments of Traceability Specimen: Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall (See Full Report) Description Model Serial Number Date of Certification Calibration Due Bruel & Kjaer Pulse alyzer - System4 Type 3560-C Bruel & Kjaer Mic d Preamp A Type 4943-B Bruel & Kjaer Pistonphone Type Omega Digital Thermo- Hygrometer A Model # RH411 H Omega Digital Thermo- Hygrometer D Model # RH411 H APPENDIX D: Revisions to Original Specimen: Composite Wall Section with PCS-1C Silicone Compression Seal System - Double Installation in filler wall (See Full Report) Date Revision Page 1: The thicknesses of the aluminum member and rubber seal were provided per customer's request Page 1: Additional information was provided in descripion of silicone application Page 5: Photo of silicone application was added. END