The toilet tank is the portion of the toilet that fills with water and is placed above the seat. The tank comes with a lid that fits perfectly, which may stop working during other bathroom projects or simply by accident. The easiest way to replace a toilet tank lid is by requesting the specific model number, but if you do not have to take the measurements of the tank and the lid to ensure the new lid is an appropriate fit.
Toto CT437FG#01 MH Wall-Hung D-Shape Dual-Flush 1.28 and 0.9 GPF Toilet Bowl with CeFiONtect, Cotton
Instructions
1 Remove the tank lid from the toilet with both hands. Place it face down on a flat surface.
2 Use a tape measure to measure the distance from the left outer edge to the outer right edge of the tank.
3 Measure the distance from the top edge to the bottom edge of the tank. Take this measurement on the far right or left side of the tank.
4 Measure the distance from the upper edge to the lower edge of the tank again, this time in the center of the tank. Some toilet cistern curves or has a recessed area in the center that has a different width than the rest of the tank. Write down the three measurements.
5 Measure the width of the lip on the reverse side of the tank. The lip is the part of the lid that is outside the tank. Take the width measurements of the lip at the same three points on the lid as it did on the tank, from both edges.
6 Add the width of the lip of the measurements taken with the tank. These final measurements are the size of the new lid you need.