I would think that 5 minutes staring at the downpipe section of your local B&Q would be quite enough to work out what would be required.
Is the idea that the downpipe runs directly into the butt?
@Dammit started
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I would think that 5 minutes staring at the downpipe section of your local B&Q would be quite enough to work out what would be required.
Is the idea that the downpipe runs directly into the butt?