It must be fitted to the wall touching sides of the tray or bath before it is plumbed into the final position.
Classi Seal Self 6.5m Flexi Seal Strip Waterproof Kit for Shower Tray
CLASSI SEAL Shower Tray & Bath Flexible Waterproof Upstand Seal Various Lengths
CLASSI SEAL 2.0 Metre Flexible Waterproof Upstand for Baths & Shower Trays
Classi Seal Flexible Waterproof Upstand for Baths & Shower Trays | 3.2 Metre
Classi Seal Flexible Waterproof Upstand for Baths & Shower Trays | 2.5 Metre
Classi Seal Flexible Waterproof Upstand for Baths & Shower Trays | 4.0 Metre
