I sell ROTH brand double wall diesel tank, which avoids the construction of the bucket and they are installed faster. External enclosure made of galvanized steel sheet, fireproof and corrosion resistant thanks to the unique welding system without welding. Inner tank made of high density polyethylene, in one piece (without seams or welds), made using the blown extrusion system and completely waterproof. Tank equipped with level indicator, leakage indicator and support to avoid contact with the ground. Duo System 1000 T: 1290 x 769 x 1490 mm, volume 1000 l. Price somewhat negotiable.