Welcome to Mr Plastic Ltd

Gutter Compatibility Charts

If you know the brand of your existing gutter, find the style of it in RED and your manufacturer in BLUE – Then simply click on the corresponding GREEN box to view the compatible products.

Brands with an X are not compatible with our systems.

Our compatibility charts do show which styles of gutter can be used together, however we always recommend not to mix brands of gutter wherever possible. If no other option is possible some gutter and/or fittings may require filing down slightly in order to offer the required water tight fit.


Freelow Gutter & Fittings Compatibility

Freeflow Gutter & Fittings
68mm Round 65mm Square
Hepworth (Wavin) Yes Yes
Osma (Wavin) Yes x
Hunter Yes Yes
Marley Yes x
Brett Martin Yes Yes
Flowplast Yes Yes
Marshall Tufflex Yes Yes
Freefoam Yes Yes

Freelow Downpipe Compatibility

Freeflow Downpipe
68mm Round 65mm Square
Hepworth (Wavin) Yes Yes
Osma (Wavin) Yes x
Hunter Yes Yes
Marley Yes x
Brett Martin Yes Yes
Flowplast Yes Yes
Marshall Tufflex Yes Yes
Freefoam Yes Yes


Polypipe Gutter & Fittings Compatibility

Polypipe Gutter & Fittings
75mm Mini Half Round (RM) 112mm Half Round (RR) 112mm Square (RS) 150mm Large Half Round (RL)
Hepworth x Yes Yes Yes
Osma (Wavin) x Yes x Yes
Hunter x Yes Yes x
Marley Yes Yes (Clipmaster) x Yes
Brett Martin x Yes Yes x
Flowplast x Yes Yes x
Marshall Tufflex x Yes Yes x
Freefoam x Yes x x

Polypipe Downpipe Compatibility

Polypipe Downpipe
50mm Round 68mm Round 65mm Square 110mm Round
Hepworth x Yes Yes Yes
Osma (Wavin) x Yes x Yes
Hunter x Yes Yes x
Marley Yes Yes (Clipmaster) x Yes
Brett Martin x Yes Yes x
Flowplast x Yes Yes x
Marshall Tufflex x Yes Yes x
Freefoam x Yes x x