Wasteflow with FSK10 Trap Size: 1½" (1.1/2") Water Seal: 50mm Anti Syphon Available: Yes With Overflow: With Overflow Standard: EN 274-1:2002 Please Note: Bath Wasteflow units enable the overflow and/or warning pipe from a cold water storage cistern and a WC flushing cistern (not fitted with an integral overflow) to be installed so that the discharge is directed into the bath via the bath Overflow Grating