42026 135° Corner Coupler: This coupler is designed to join 102mm windows or doors to each other at 135°.

The tubular coupler will accept 51mm load bearing steel columns to support the building over.

42022 90° Corner Coupler
This coupler is designed to join 102mm windows or doors to each other at 90°.

The box coupler will accept 76mm load bearing steel columns as detailed left to support the building over.

Other Couplers: Vantage offer numerous snap-on couplers & trims.

Important Note:
Aluminium couplers without steel support columns are non-load bearing (can't be used to support the building above).