Skip to main content

Shop by Category

Shop by Brand

Shop by Brand

Duct Checkers

Conduit & Duct Checkers

Before you pull valuable fiber optic cable or run line blowing equipment through underground conduit, verifying the integrity of the pathway is a crucial step. At Contractors Utility Supply, we offer a comprehensive selection of premium duct checkers—also known as proving mandrels—designed to ensure your ducts are clear, perfectly round, and free of deformations. Running a duct checker through your system prevents costly cable damage and avoids unexpected snags mid-pull.

Our inventory features heavy-duty DCD duct checkers engineered to withstand rigorous field conditions. We stock a wide variety of sizes to fit any standard conduit, ranging from compact 1-1/4 inch models up to large 8-inch diameter checkers. To guarantee accurate proving, our selection includes specialized options tailored for specific wall thicknesses, including both Schedule 40 and Schedule 80 duct profiles.

Constructed with durable, high-visibility polyurethane discs along a rugged wire rope core, these flexible checkers easily navigate bends while maintaining their shape. Equipped with pulling eyes on both ends, they can be efficiently pulled in either direction. Browse our complete collection below to equip your crew with the essential proving tools needed for flawless cable installations.

 

Compare Selected