Exclusions include the 110mm downpipe, 160mm downpipe, and 170mm guttering.
Brett Martin 115mm Deepflow High Capacity Gutter is a semi elliptical rainwater system which offers more effective rainwater drainage on larger roof areas. The Deepstyle Deepflow system uses 68mm Round Downpipes and Fittings. It is available in six colours: Black, White, Brown, Grey, Anthracite Grey and Arctic White.
| Gutter Flow Capacity Litres per second | Maximum Roof Area Area m sq | ||||
| Level | 1:600 | Level | 1:600 | ||
| 115mm Deepstyle | Outlet at one end | 1.88 | 2.30 | 90 | 110 |
| Outlet at centre | 3.75 | 4.58 | 180 | 220 | |
| 112mm Roundstyle | Outlet at one end | 1.00 | 1.30 | 48 | 62 |
| Outlet at centre | 1.82 | 2.43 | 87 | 116 | |
| 114mm Squarestyle | Outlet at one end | 1.20 | 1.52 | 57 | 75 |
| Outlet at centre | 2.20 | 3.30 | 106 | 144 | |
