3-1/2" Expansion Coupling
Topaz 3-12" Rigid Expansion Couplings allows up to 4” of linear movement caused by thermal expansion and contraction. The weatherproof design is suitable for use on outdoor structures prone to movement like bridges, railroads, and buildings. The internal grounding design prevents a need for external bonding jumpers and cables. Our Hot dip galvanized finish provides superior protection against severe environmental factors.