BM4R Four Rollered Bellmouth

Designed to be placed into the end of ducts to allow easy passage of cables into them.
Fitted with 4no. steel rollers to ensure the cable does not rub on the duct edge from any angle.
They are fitted with an adjusting bolt to secure them inside the duct.
All steel construction, zinc plated and fitted with bronze bushes to allow free turning of the rollers.