Why Choose the 135 Degree Long Tee Twin Flue?

Manufactured from 316L stainless steel (inner) and 304 stainless steel (outer), both 0.4mm thick, this fully welded tee is insulated with high-density compressed rockwool for maximum safety. HETAS approved and UKCA marked, it is tested to 600°C and comes with a 25-year warranty. Finished in a stainless steel mirror, it’s perfect for all solid fuel, gas, and oil appliances.

Key Features

Cleaning Access: Easy sweeping at the chimney base
135° Long Branch: Reaches through most UK wall constructions
Unrestricted Gas Flow: Specially shaped to minimise resistance
Durable Construction: 316L/304 stainless steel, fully welded, mirror finish
Insulated: Compressed rockwool for superior safety
Certified & Approved: HETAS approved, UKCA marked, EN1856-1 compliant
Warranty: 25 years (conditional), 2 years on paint
System: For use with TWPro Twin Wall Flue parts only

Product Specifications

Type: 135 Degree Long Tee
Internal Diameter: 5 inch (125mm)
External Diameter: 7 inch (175mm)
Material: 316L Stainless Steel (inner), 304 Stainless Steel (outer), 0.4mm thick
Insulation: Compressed rockwool, 200kg/m³
Finish: Stainless Steel Mirror
Approvals: HETAS, UKCA, EN1856-1
Warranty: 25 years (conditional), 2 years paint

Additional Information

FREE Delivery: Available on orders over £100. Click here to check delivery information for your area.

For more tees and twin wall flue accessories, visit modernstoves.co.uk.