. . ...\n2 x Condensation Traps 100-110mm with Overflow Connection \nCondensation Trap 100-110mm with Overflow Connection. Fits either 100mm I.D. Pipe or 110mm O.D. Pipe \n--Recommended in both the Building Regulations and NHBC Standards \n--Removes condensation risks from unheated areas \n--Real advantages over using insulated hose \n--Simple to install and handle \n--Cost effective solution \n--Specifically designed for ventilation applications \nWhen a ventilation duct is installed in an unheated area, such as a cold loft space, condensation can form on the inside of the duct. This moisture can run down the duct and create a potential hazard, such as dripping onto the electrical connections of a fan or cooker hood. A condensation trap can be used to prevent this problem occurring. The trap is simply connected to the system as part of the vertical duct run and an internal gutter within the trap collects the moisture and then drains it out through a standard overflow-pipe to the outm