SELKIRK CORP 244100 4-Inch  Pellet Vent Tee/Cap Manufactured in china Easy to use Highly durable 4" inch, 4Vp-Ts, Pellet Vent Tee with Tee Cap Type L pellet vent tee cap can be removed for inspection and clean out Replaces the pipe connector and is used to transition from horizontal to vertical orientation Features rolled-over male end which eliminates sharp edges Also features internal spacing bead that assures uniform insulating air space between pipe walls