All of TWPro components found in the range below have been manufactured with an internal diameter of 125mm (5 inch), a 30mm layer of compressed Rockwool insulation and an outer diameter of 175mm (7 inch). Therefore, brackets, supports, and collars are designed to secure around the greater external diameter. Any item that requires a locking band to create a connection comes with one included.

The black terminal 125mm twin wall flue pipes are manufactured from high-quality stainless steel which is then powder coated to a matte black finish to suit our black finish range. Our range of black terminal includes rain cap, cone top cowl, rotating cowl which boasts excellent insulating properties. It also comes with secure locking bands, fully welded twin walls, and an impressive twelve-year warranty for long-term peace of mind. 

If you’re looking for black terminal 125mm twinwall flue pipes, then take a look at our range of pipes, adaptors, rain caps, and base supports below.  

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Rain Cap With Mesh dia 125mm - Black

CONSTRUCTIONOuter skin is made from 304 grade stainless steel and is 0.4mm thick. This is then powde..

Our Price (ex VAT): £61.82 Inc VAT: £74.19

Rain Cap dia 125mm - Black

Our range of 125mm black rain caps are made with the finest materials and they are manufactured by a..

Our Price (ex VAT): £48.32 Inc VAT: £57.98

Cone Top Cowl dia 125mm - Black

Our MI-Flues cone top cowls are designed for use with twin wall systems and they can also be used wi..

Our Price (ex VAT): £57.61 Inc VAT: £69.14

Anti-wind Cowl dia 125mm - Black

The TWPro 125mm anti-wind cowl is designed to be used with a twin wall flue system and it can also b..

Our Price (ex VAT): £62.05 Inc VAT: £74.46

Rotating Cowl dia 125mm - Black

This twin wall product is made of the finest materials and manufactured  by a well known compan..

Our Price (ex VAT): £170.47 Inc VAT: £204.56