Do you need a Coupler or Extension Piece?

A Coupler is used when two items are attached together. It allows for a neat join between the two. If you are ordering coupler please reduce the width of the shortest window by 5mm to allow for it we will not make this allowance.

An Extension Piece is used to thicken the frame. It is available in 15mm, 25mm and 40mm thicknesses. Please ensure you make appropriate reductions when ordering your window/door - we will not make this allowance.

Please note, screws are not supplied with Couplers or Extensions.