Felt Sleeve And Adaptor To Convert UB19 & UB5 To A TerminalFelt Sleeve And Adaptor To Convert UB19 & UB5 To A TerminalFelt Sleeve And Adaptor To Convert UB19 & UB5 To A TerminalFelt Sleeve And Adaptor To Convert UB19 & UB5 To A TerminalThese adaptors allow the on-site conversion of UB19 Tile/Slate vents to service terminals. The felt sleeve click-fits in place into the underside of the UB19. The stepped adaptor is cut off at the required diameter and then pushed onto the sleeve. The joint between the felt sleeve and adaptor should be sealed with PVC solvent weld. Features & Benefits To convert a Ubbink UB19 to a service terminal. Adaptor 160/150/125/110/100. Product Specification Colour: Black Weight: 0.26kg Material: Styrosun® 3600 UV Resistant High Impact Polystyrene.