You should be able to buy an oem and replace the supplied.
Ferguson carries a good selection. George Morlan is retail.
High Efficiency Toilet (HET) uses just 1.28 gallons per flush, or 20% less water than standard toilets which is 1.6 gallons. As to price, I don't know probably the technology factor.
Big enough for a toilet to fit.
Lined tanks ? Idk
No one has made a comment about a cracked toilet in awhile. I would assume that the issue has been resolved. I love this toilet. It's comfortable and works great. It's even better that I got a $100 credit on my water bill for installing a low flow toilet.
CARLA, All Champion models use a 12" rough in. Sincerely, your American Standard Consumer Connection Team
Ramona Williams, I am very sorry but the Champion toilets are only available in a 12" rough in. Sincerely, your American Standard Consumer Connection Team
On the left is the float with a long screw-looking rod. Turning the rod clock-wise or counter-clockwise will raise or lower the water level at which it activates. There's not a lot of difference between the high & low extremes. Each time you turn the rod, partly flush the toilet so the tank refills. That way you can fine-tune the level.