Selkirk 4"x3" Adjustable Tee with Cap (Pellet Vent - VP - Type L)Selkirk 4"x3" Adjustable Tee with Cap A tee is used in conjunction with a vertical pellet pipe system to provide easy access for inspection and cleaning. It replaces the pipe connector and is used to transition from horizontal to vertical orientation. This tee includes a tee cap. Replaces Pipe Connector, 3" 4" Increaser and 4" Tee. Pellet Vent VP Type L Model VP's proven coupling design with its built in gasket, connects in seconds and ensures joint