The Thetford C400 Cassette Sliding Cover is an ideal genuine replacement part for lost, broken or damaged parts. Over time your caravan or motorhome toilet cassette parts can get worn or lost – the cover for the Thetford C400 and C500 covers the opening to the removable cassette refu15 toilet. The grey cover measures approximately 15cm long by 10cm wide, with a lip edge along each length that slides easily into your toilet cassette to cover the opening. The cover simply slides in place to replace the old or lost part. An ideal toilet spare replacement part compatible with your Thetford C400 or C500 cassette toilet for your caravan or motorhome.