Clean water resisting, snap together coupling, no ugly rivets or metal pressings required.

Non-load bearing coupler, can’t be used to support the weight of roof over. If you have to support the roof use 42022 with 102mm frames and steel load bearing post. An engineer’s certificate would be required to confirm that the 76mm post is strong enough.

Important Note: Aluminium couplers without steel inserts are non-load bearing (can’t be used to support the building above). For corner window layouts refer installation section.

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

The coupler will also allow 50mm windows to be clipped to 102mm doors.