# Cascade Offset Downpipe – Cast Iron Style Rainwater

This cast iron style offset downpipe from the Brett Martin Cascade range is designed to direct rainwater smoothly between sections of downpipe where a wall projection is required. Available in six sizes to suit any installation.

**Benefits**

-   Classic cast iron effect finish replicating the traditional appearance of real cast iron.
-   Available in sizes: 115mm, 150mm, 230mm, 305mm, 380mm and 455mm projection.
-   Bridges offsets in downpipe runs with precision.
-   Compatible with the full Cascade 63mm cast iron effect downpipe range.
-   Lightweight and easy to handle compared to genuine cast iron.
-   UV resistant for long-lasting colour retention.

## Details

- **Price:** 65.95 GBP - 117.6 GBP
- **Vendor:** BRETT MARTIN PLUMBING (B80B)
- **Type:** Cast Iron Effect Guttering
- **Tags:** Cast Iron Effect, Gutters & Downpipes, National, Offset Downpipe, Plumbing & Heating

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 115mm | 65.95 GBP | In stock |
| 150mm | 75.86 GBP | In stock |
| 230mm | 71.23 GBP | In stock |
| 305mm | 98.94 GBP | In stock |
| 380mm | 105.34 GBP | In stock |
| 455mm | 117.60 GBP | In stock |

## Images

- Cascade Offset Downpipe – Cast Iron Style Rainwater

---

> Source: [Carvers Building Supplies](www.carvers.co.uk/products/cascade-115mm-offset-br2115ci-downpipe-cast-iron-style-rainwater)
> Updated: 2026-06-16