BOSS MaxiCollars™ set new standards in the use of retrofit pipe collars. With a unique design and advanced intumescent technology, MaxiCollars™ provide one of the highest expansion rates available on pipe collars, providing a high performance fire protection. Coupled with a unique profile of only 30mm or 40mm depth, MaxiCollars™ are the best choice for tight fitting areas or closely installed pipes.

Tested in a wide variety of walls, floors and ceilings, MaxiCollars™ have approvals in the following substrates:

  • FR Plasterboard
  • Concrete & Masonry walls
  • BOSS Batt
  • AAC / Hebel
  • Speedpanel
  • Supapanel
  • Pronto Panel
  • Comflor floor slabs
  • Cross Laminated Timber

MaxiCollars™ have approvals for a wide variety of services:

  • uPVC DWV Pipes
  • uPVC Conduits
  • cPVC Sprinkler Pipes
  • Lagged Steel, Copper & Iron Pipes with Thermobreak® Pipe Insulation
  • A/C Paircoil Bundles
  • PEX Water Pipes
  • PEX AL Gas Pipes
  • PP-R Pipes (Aquatherm)
  • HDPE Pipe

BOSS MaxiCollars™ have extensive fire test approvals including AS1530.4: 2014, AS1530.4:2005 & AS4072.1 offering 60min, 90min, 120min & 240min FRL’s. Please refer to the Technical Data Sheet for specific performance information relevant to individual applications approved to AS1530.4: 2014 & AS4072.1. Where certification refers to AS1530.4: 2005 it is noted specifically.



Product Details


Part ID : MC


Size :

  • 32mm
  • 40mm
  • 50mm
  • 65mm
  • 75mm
  • 80mm
  • 100mm
  • 125mm
  • 150mm
  • 200mm
  • 250mm