Nipple Fitting; Applicable Standard UL, FM, ULC, VdS, LPCB, BV; Size A 4"; Size B 4"; Overall Length 6"; Schedule 40 S; End Connection Grooved x Male Threaded; Material Carbon Steel; Material Specification ASTM A53/A135/A795; Process Fabricated; Lead Free; Outside Diameter 4.5"; Weight 5.4 Lb; Warranty 10 Year Limited