K12HD: Volume 700L, buoyancy 500kg, dimensions - 1.20 x 1.15 x 0.60 m. K12HD is the only pontoon of this type on the market that has a central support  - we have added a HDPE pipe for extra strength under difficult conditions. Besides ensuring that the pontoons may not collapse under the toughest of circumstances it also serves as "vertebrae" of the construction and adds strength in all dimensions. If required - pontoons are available with hard PUR filling! If you would like to learn more - please write or call: info@ufloat.eu +371 29406119