Some of the largest rectangular trampolines are made by Supertramp and give a huge jumping area giving extra fun and safety. The Supertramp trampolines are the strongest and toughest in the league. Some giving over 60 square feet or jumping area so a huge amount of space, even for skilled jumpers. Safety enclosures are now available for connecting to these trampolines with a choice of colour to match your trampoline jumping area.An average trampoline of this size takes aroun 40 minutes to assemble and weighs about 20 stone. They are very weatherproof and do not require any tools to put together with a free laddeer, 10 years guarentee for the frama dn 5 years for the pads and springs.