Piers 1/2" Em-Lok Adjustable Swing Ring, NFPA

Knurled insert nut allows for vertical adjustment after installation Underwriters Laboratories Listed (UL) National Fire Protection Association Standardized (NFPA) Complies with Federal Specification WW-H-171E & A-A-1192A Type 10, Manufacturers Standardization Society (MSS) SP-69 & SP-58 Type 10 Designed for the suspension of insulated pipe lines Plastic coating separates the copper tubing from the steel ring for electrolytic resistance and also minimizes noise and vibration