Execution The insert The plastic is rotationally molded in a durable, maintenance-free and UV-resistant polyethylene plastic. The plastic is virtually indestructible and has an estimated lifespan of more than 40 years. The plastic can withstand heat up to 130 degrees and down to -50 degrees. It is environmentally friendly and fully recyclable. The insert is available in beautiful dark gray with stone effect, the stone effect makes dirt and sea water less visible in the hot tub. The lid The lid is shaped, with a core of heavy insulation to keep the heat in the water even during the cold winters. The lid is reinforced and covered in fine gray vinyl. The lid is foldable in the middle which makes the lid smooth and easy to lift off. The lid has four straps with associated brackets and locks, the locks have a two-digit code lock. The lock and brackets are mounted with the supplied screws. Gas heater The gas heater has automatic ignition and needs a water flow of at least 7 l/min to be activated. The stove has a digital temperature display for incoming water and is CE marked. A specially designed trolley is included so that you can easily take out your gas heater when it's time to bathe. Circulation pump, hose and couplings are included. What you need to purchase is a gas tube with gas and a reduction valve for the gas tube. Structure Polyetheplast The plastic is not self-supporting, it needs a support for the floor and seating area. Build your own support using our drawings and assembly videos or buy an insulation package (you do not need to build a support with the insulation package, it gets the support it needs then) Then place the bath on a flat and stable surface that can withstand the weight of the water and the bathers.