Flushmate System 1.6 GPF Replaces 501-B Series for Toilet Tanks With Center Pushbutton. Designed to fit tanks with 3 in. Discharge Hole. Replacement system for all barrel shape vessels.

• Direct replacement for obsolete 501-b series
• Fits all OEM tanks equipped with 501-B, OR 501-A series
• 5 year limited warranty
• Easy to install
• Complete with mounting hardware for toilet tank
• Direct replacement system for obsolete systems and serial numbers -F3B

Replacement 503 series system for 500, 501, 501-A, 501-B series for toilet tanks with flush handle. The system includes all of the mounting hardware to install the system into the toilet tank, tank-to-bowl gasket and the handle kit. The system will also replace an existing Flushmate system that has a 3 in. hole at the bottom of the tank. It is not designed to work with toilet tanks that have a 2 in. hole.

• Easy to follow instruction and online video demonstration at www.Flushmate.com
• It recommend that have a ST100100 3 in 1 wrench available for removing the lock nuts
• 5 year limited warranty
• Handle kit is designed for either left or right toilet tanks
• Designed to be used with all pressure assist toilets that have a 3 in. hole at the bottom of the toilet tank
• When working on a pressure assist toilet it is always recommended that you turn off the water to the toilet and flush the toilet to release the pressure before servicing