You are using an outdated browser version not supported by this website.
Click here to upgrade your browser

Low Cast-in Stack Fire Collars

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.

Key Features
  • Sturdy construction for casting in 
  • Multiple fixing positions 
  • Made from recycled PP 
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Recycled Content (Pre-Consumer)
Pre-Consumer Recycled Content
Scope of Use

To be cast into solid masonry floors.

Limitations on Use

Can not be retro fit.

Please ensure that relevant testing has been done on your install scenario before selecting product.

Statement of Building Code Compliance

All products are tested to AS1530.4 - 2005 and AS4072.1 - 2005.

In-Service History

A wide range of multi story building applications.

Other Performance Attributes

At the core of the Allproof passive fire protection product range is the advanced intumescent technology. This enables Allproof to offer products with performance and design advantages for engineers and installers of passive fire protection products. Allproof’s intumescent material expands when exposed to heat and as its volume increases with significant expansion pressure, it produces a stable char. The intumescent char formed is a poor conductor of heat, retarding heat transfer and retaining the integrity and insulation of service penetrations through otherwise fire-resistance rated walls or floors.

BRANZ Appraised
BRANZ Appraised
Independent Assessment
Independent Assessment
Test Results
Test Results
C Protection from Fire compliant
Protection from Fire
Installation Details Link
Masterspec Specification
BRANZ Appraisal No1088

1088 [2019]

Test Results and Installation: Passive Fire Protection Range

Nov 2019

Product Warranty



A New Zealand owned company specialising in the manufacture of plumbing and drainage products and systems.

Product Enquiries

News from Allproof Industries

New 300mm Clear Opening Commercial Channel Made in NZ from 100% Recycled Plastic NEW
Managing Leak Control to Achieve a Compliant Tiled Wetroom System
Allproof Innovates their Perimeter Drain with New Grate and Clip System NEW

Posts by Andrew Smith

See All

Posts by Justin Barber

See All

Get a free weekly digest of essential news

New and updated architectural products, design solutions, inspiration, technical advice and more when you sign up for EBOSS.