Vortice 46498 100mm Joiner
The 100mm round connector is manufactured from (white) High Impact Polystyrene and has a minimum free area of 7,283mm²
It has a male spigot for connection inside of the 100mm diameter round duct
46498 is manufactured in compliance with Domestic Plastic Ductwork specification DW/154 and does meet UL94HB flammability standard