Rain cap/spark arrestor fits on top section of pipe.

When ordering a Yukon or Wilderness stove with 5" straight pipe, the 6" rain cap in a stove package will not fit on the 5" straight.  You will need to order a 5" rain cap id you decide you want a rain cap.

Rain cap prevents rain and snow going down your stove pipe.

Spark arrestor prevents most ash and sparks landing on tent roof.

Size of rain cap/spark arrestor is determined by diameter at the top of last section of pipe.