i-sells.co.uk supplies 125mm (5" inch) ducting in white pvc plastic. Other special duct materials and finishes are available, along with a full range of fittings and ancillary components. 

Note that our straight lengths of Round plastic 125mm ductwork tube are 'female' i.e. round duct fittings such as bends and reducers are 'male' and generally slip inside the duct tube. To connect two 'male' duct bends together use a length or off-cut of straight ducting. To connect two 'female' straight duct lengths together use a male ducting connector. 

Note that our straight lengths of Rectangular plastic 125mm ducting tube are 'male' i.e. rectangular duct fittings such as bends and reducers are 'female' and generally slip over the rectanglular duct. To connect two 'female' duct bends together use a length or off-cut of straight ducting. To connect two 'male' straight duct lengths together use a female straight ducting connector. 

• Dimensions - Round Parts: 125mm ducting
• Dimensions - Recangular Parts: 150mm x 70mm ducting
• The 125mm system is designed to be used in conjunction with cooker hoods and extraction fans with a maximum output of 650m³ per hour
• All 125mm internal components are made from flame retardant materials
• Components can be bulk or individually packed to meet customer requirements
• All wall outlets are UV stabilised and available in white