TW Pro Stainless Steel 5″ (125mm) Joist Support
Joist supports are used to support the chimney as it is passing through floor joists. The joist support is used in conjunction with fire stop plates and is fixed on the upper floor section spanning the floor joist allowing even weight distribution. See loading data in Guides.
TW Pro by MI Flues is a premium twin wall insulated chimney system engineered for high-performance heating appliances. Designed for wood burning stoves, multi-fuel stoves, gas, and commercial applications, TW Pro delivers exceptional draft performance, superior thermal efficiency, and industry-leading safety. Manufactured in the UK from high-grade stainless steel, this twin wall flue system offers quick installation, durable construction, and full compliance with EN1856-1 standards.
For installers and homeowners seeking a reliable, HETAS-approved twin wall chimney solution, TW Pro provides long-lasting performance, sleek aesthetics, and trusted British manufacturing quality.
