Thetford 135 vs 335 Porta Potti?

[XBeatzX]

I see much love for the Thetford 135 on this forum, however never see mention of the 335. They seem to have the same dimensions, and the 335 has a much improved "Piston" flush and level indicator. Can be found for only $15-$20 or so more than the 135. Need to buy something for our 13' Scamp under bench. Am I missing something about the 335 that should be avoided?

[bjshan]

Chris, for a year I have had the 320P (p for piston) which has been discontinued, but is closest to the 345. The 345 has these (relative) advantages over the 335: .8 taller, 1.5 wider, 1.8 deeper, (i.e., closer to a home toilet in size) 1.4 gallons more fresh water capacity, .6 more waste capacity, @6 more flushes.The biggest advantage to me was the bigger footprint. If you have the space for this one, I would recommend it. I also have an exercise step that I put it on top of (in the doorway) at night to make it even higher. My ancient knees find that much easier.

[XBeatzX]

Originally Posted by bjshan

Chris, for a year I have had the 320P (p for piston) which has been discontinued, but is closest to the 345. The 345 has these (relative) advantages over the 335: .8 taller, 1.5 wider, 1.8 deeper, (i.e., closer to a home toilet in size) 1.4 gallons more fresh water capacity, .6 more waste capacity, @6 more flushes.The biggest advantage to me was the bigger footprint. If you have the space for this one, I would recommend it. I also have an exercise step that I put it on top of (in the doorway) at night to make it even higher. My ancient knees find that much easier.

I would love to move up in size, but unless I'm mistaken, the 135/335 are already at the maximum height for the underbench potti compartment on the Scamp.