The Bushman 530 Gallon Slimline Rainwater Harvesting Tank (SKU 45503) is built for sites where footprint matters more than sprawl. Slim in one axis and long in the other, it measures 25 inches deep, 86 inches wide, and 78 inches tall, so it tucks against a wall or along a fence line where a fat round tank won't fit while still banking 530 gallons. The trade for that slim profile is length: plan on roughly seven feet of clear run along the wall, not a small corner. If you're planning a rainwater catchment run and searching for a slimline rainwater tank or narrow-profile harvesting tank that holds real volume, this is the one that fits the tight spot.
Will it work for your site?
This is a vertical storage tank rated at 530 gallons, with OEM-verified dimensions of 25 x 86 x 78 inches and a footprint of 25.0 x 86.0 inches. Fill it and you're carrying 4,420 pounds of water on that narrow base, so the pad underneath has to be sized and level for the full-water load, not the empty shell. Because the footprint is long and narrow, it concentrates a lot of weight on a slim base, which makes the pad the single most important part of the install. That same 4,420-pound full weight and oversized footprint also drive the LTL freight class you'll pay to ship it, so it's worth pulling a freight quote to your ZIP early. Work through our concrete pad sizing guide before you set it, and use the Tank Sizing Calculator and Tank Sizing Guide to confirm 530 gallons matches your roof catchment area and rainfall. See the technical drawing on this page for the dimensioned layout and fitting positions.
Sizing it into a rainwater system
A harvesting tank is only as good as the plumbing feeding it. First-flush diversion keeps the dirtiest runoff off your stored water, and getting the diverter volume right is worth doing before you buy fittings. Our writeup on first-flush diverter sizing per the Texas Manual on Rainwater Harvesting walks the math, and the state-by-state sizing guide shows how regulations and rainfall shift the target volume depending on where you are. If this tank doubles as a rural fire-protection reserve as well as catchment, the NFPA 22 reservoir design guide covers how a poly tank fits the private fire stack and how to protect it in cold climates.
The mistake to avoid
The one that catches people on slimline tanks is the base. Because the footprint is long and narrow, an uneven or undersized pad lets the tank flex and lean as it fills toward its 4,420-pound full weight, and a leaning slim tank stresses the wall and fittings. Set it dead level on a pad sized for the full-water load, support the full 25 x 86 footprint, and don't shim one corner. Get the pad right and this tank runs for years without a second thought.
This tank ships LTL freight, quoted live to your ZIP code. Get a freight quote in seconds with our Freight Cost Estimator, or call 866-418-1777 and we'll walk the sizing, the pad, and the freight with you.
