Condux International 3-1/2" Quick Double Conduit Seal-Off for blowing projectiles and line carriers through duct using an external air compressor. The Seal-Off Control Valve Body and Seal-Off Heads are sold separately. This seal-off has a durable construction designed to stand up to the toughest jobs. Its easy-to-install feature allows you to quickly and efficiently seal off runs in conduit without tools.
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