Product Description
Allproof low cast-in stack collars are designed to suit 40-100mm PVC pipe penetrations. The low cast-in collar is installed in a similar manner to the standard cast-in collar. The main difference with the lowcast-in collar is that the pipe acts as the riser to the required height during the concrete pour. The pipe should be capped to prevent concrete entering the pipework during construction.
Drawings available on our websitehttp://www.allproof.co.nz/passive-fire-protection/low-cast-in-stack-collars