1.Hot selling,good feedback; 2.Used for caulking joints; 3.simple,convenient,cheap; 4.FOB Shanghai/Ningbo; 5.Fast delivery polyurethane foam spray gun application Range:1. Fire blockseal plumbing venting systems, seal plumbing penetrations, seal concealed electrical penetrations, seal recessed light fixtures, seal duct work penetrations between floors2. Spray foaminsulate and seal corners of ...