309mm Outside Diameter x 300mm Inside Diameter, Food Grade Hose & Ducting, 10 Metres, AIRDUC PUD 351 FOOD, Wall Thickness 1mm, Weight 2.860 Kg per Metre, Maximum Vacuum Pressure 0.030 bar, Working Temperature -40┬░C to +90┬░C, Working Pressure 0.240 bar, Norres