The main difference between the Dometic 310 Part-Timer RV Toilet # DOM57FR and the Dometic 311 Part-Timer RV Toilet # DOM67FR is that the 310 is standard height (20" tall) and the 311 is a low profile (15-1/2" tall). Both toilets will mount the same and have predominantly the same features. There are a few other small measurement difference but none as big as the height difference.
310 Measurements:
Overall dimensions: 18-1/2" long x 15" wide x 20" tall
Seat length: 15-1/4"
Seat thickness:... view full answer...
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