Designed to help you to save water & money, this deluxe downpipe filter is self-cleaning & is perfect for capturing rainwater for use in your greenhouse or garden. Benefits: Will save you money on your mains water supply by providing filtered rainwater all year round. Application: Suitable for use with round downpipes Quality: Self-cleaning stainless steel fine filter Did you know? In the UK, the proportion of water used for gardening can approach 50% during the driest months.