Product details:

Carlon Expansion fitting in gray color is made of durable polyvinyl chloride that provides better insulation against electric shock. It has trade size of 3". It is designed to compensate for length changes in exposed conduit run due to temperature variations. It comes with two-piece molded design and lubricated seals for easy operation. It has two O-rings to prevent leakage and ridges for easy installation. Conduit fitting can be installed vertically/horizontally.