Ascaso Steel Duo Plus Group Head Gasket - 7.8mm Food-grade silicone group head gasket specified for the Ascaso Steel Duo Plus (first produced in 2024). This gasket holds the Big Dream T basket-style shower screen assembly in place, it's not compatible with the older flat screen/screw style setup. SPECIFICATIONS 73 x 56 x 7.8 mm, three internal cuts, food-grade silicone, branded "Ascaso - I.5459" COMPATIBILITY Fits: Ascaso Steel Duo Plus (2024+) Replaces: Ascaso I.5459 Works with: Big Dream T basket-style shower screen assembly INSTALLATION Moderate DIY job during a group head reseal; group head disassembly required.