3x External Fixed Grille with Insect Screen - 100mm (diameter) & 150mm (diameter) Neck Size

3 Pack of G.E.P External Fixed Grille with Insect Screen - 100mm (diameter) & 150mm (diameter) Neck Size   The grille vent includes a neck that connects to standard aluminium flex foil duct. Made with plastic and features an insect screen, removable for cleaning. Suitable for external use. Colour - White Available in two neck sizes. 100mm (diameter) & 150mm (diameter).   Dimensions: 4inch / 100mm (diameter) - 153mm x 153mm (grille) 6inch / 150mm (diameter) - 204mm x 204mm (grille)