The Deluxe RC-1 (Resilient Channel) is made with a 1-1/4" top flange, and a 1/2" nailing flange, giving the channel 1/2" furring height from the face of the wall stud.
Sound Transmission Loss Test Report (#TL21-339)
All Accessories are fabricated from prime galvanized steel G60 (G90 upon request) zinc coating by the hot dipped method, conforming to steel and coating specification ASTM A-653/A-653M or zinc alloy meeting ASTM B-69. ASTM A 1003 OR A653 GRADE 33 OR 50 WITH G40, G60 OR G93