The portholes can be fitted in a surface with a minimum thickness of 2mm and a maximum thickness of 18mm

The use of a flexible coupling between tail piece and motor eliminates vibration

All  have blue cards

1-1/2" 3H 1-1/4"  5

Vetus SLANG60 - Hose, exhaust 60x68mm p/m, coil 20mtr Pumps The portholes can be fittedThe completely smooth internal surface of the hose will reduce back pressure in the engine. Exhaust hoses with an internal diameter up to 152mm have a bending radius of 1,5 x the diameter. Exhaust hoses withan internal diameter of more than 152mm have a bending radius of twice the diameter. Temperature resistant between 30 + 100C with brief temperatures of 115C.