Thetford's new SmartTote2 LX 4-wheel models offer larger capacities and a 5' sewer hose that remains attached to the tank for faster, more sanitary use. Includes a 90 deg. sewer elbow for convenient emptying, a sewer hose cap for storage and a compartment to neatly contain it all. LX 4-wheel models feature a tow handle with the best maneuverability on the market, a built in AutoStop(TM) level gauge to prevent messy overfilling and a new large rinse port on top for an easy way to clean out the tPremium 2-wheel portable waste tanks have front leveling support. Molded-in handle. Four big sizes: 12, 18, 27 and 27 gallons. PermaStore(TM) ready-connect 5 foot sewer hose with bayonet cap saves time and mess. AutoStop(TM) Level Gauge/Vent eliminates guessing, prevents overfilling. Rinsing hose snaps into molded clips. 12 gallon model does not have PermaStore?M), AutoStop(TM), rinse hose or leg support.