The Enduraplas 300 Gallon Plastic Horizontal Leg Tank (SKU THF00300BK) is a low-slung, self-standing utility tank built to ride on a trailer, skid, or truck bed and haul water where the job is. The horizontal body sits on integrated legs, so it drains toward the outlet and stays put without a separate cradle. Overall it measures 74 inches long by 46 inches wide by 31 inches tall, giving you a 46 x 74 inch footprint that drops onto most utility trailers and flatbeds without custom framing.
Will it work for your setup?
This is a 300-gallon horizontal leg tank sized for water and water transfer. Filled to capacity with plain water it carries roughly 2,502 pounds, so size your trailer, axle, and tie-downs to that loaded figure before you haul, not to the empty shell weight. Water weighs about 8.34 pounds per gallon, and this listing does not carry a published specific-gravity rating — confirm the SG limit for any product heavier than water before you fill it. The 31-inch overall height keeps the center of gravity low, which is what you want in a portable field-transfer tank moving over uneven ground. Run your load through the Tank Sizing Calculator and the Tank Sizing Guide so the loaded weight matches your rig.
The mistake to avoid
Leg tanks like this are built for transport, not for a permanent full standing load in one spot — support the belly and legs evenly and keep the tank strapped over its saddle, never suspended by fittings. Outlet size, thread, and leg positions are confirmed on the technical drawing on this page, so check it before you build the mount or plumb a fitting; don't assume a size. Before you move anything down the road, confirm your DOT footing: a portable ag utility tank has a specific classification, and roadability isn't automatic. Our guides on the DOT Non-Roadable Trailer (NRT) scope and the 49 CFR 173.5 agricultural exemption walk through where the line falls for farm fleet use.
Freight
This horizontal leg tank ships LTL freight on its own footprint and is quoted live to your ZIP code — pull an exact number with the Freight Cost Estimator or call 866-418-1777 and we will book it for you. Give us the delivery ZIP and whether you have a dock or need liftgate service, and we will match the carrier to your 300-gallon leg tank.
