SELKIRK CORP 244800 Vertical Termination Cap, 4-Inch Manufactured in china Easy to use Highly durable VP-VC 4" inch Vertical Termination Cap, for Pellet Pipe Installations Vent Termination for vertical thru-the-roof installations Type L pellet vent provides necessary protection of the vent system from rain and other elements Features rolled over male end eliminates sharp edges Internal spacing bead assures uniform insulating air space between pipe walls