Selkirk 243086 Adjustable Pellet Stove Pipe, 3" x 12"Adjustable pellet stove pipe type L vent, gives installer the ability to add from 2 1 2" length to a maximum of 10 1 2" when slid over another piece of type L pellet pipe. Measures: 12" x 3" Part no. 3VP EZAJ12 Type L vent, gives installer the ability to add from 2 1 2" length to a maximum of 10 1 2" when slid over another piece of type L pellet pipe Made in U. S. A.