PelletVent Pro 4″ Black Single Tee with Clean-Out Cap This 4 Inch Pellet Chimney Black Single Tee with Clean-Out Tee Cap from the PelletVent Pro series is a Type L Biofuel Chimney Pipe component and consists of the duralock system for a tight seal. Use for a 90 Deg offset. Branch swivels for alignment. Removable twist-lock Clean-Out Tee Cap. Features: Type: Tee with Cap. Finish: Black. Tee Type: Single. Cap type: Clean-Out. Finish: Stainless Steel. Use for 90 Degree Offset. Branch Swivels for Alignment. Specifications: Overall Dimensions: 10″ (H).