Thetford Flush Service Door 3 Seal £20.00 Out of Stock Details: Thetford Service Door 3 Seal Thetford part number - 26901 Prima part number - 1120205 Thetford Flush Service Door 3 Seal SKU: 6635 £20.00 - Sorry, sold out Call us on 01422 384508 for more information on this product.