Review on 1-Step Barrier Rated Cartridge by 3M by Aaron Lewis

I have been using this foam fire protection on commercial construction sites for over a year. This is a great product. The foaming action really makes it easier to seal wires and pipes as it fills gaps better than traditional fireproof plugs. When it comes to sealing bundles of wires like data cables this is the best product I have used. It's more expensive than fire candles, but the labor savings are worth the extra cost.