whay size connector pipe to get

[terp393]

I'm getting single.wall connector pipe for my wood stove I picked up for 20 bucks it's a king model 632 the opening is on the stove where the connector pipe goes is 6 inch od and 5 1\2 Id what size pipe do I get thanks

 

[begreen]

Sounds like 6" with an appliance adapter or a heavy crimp.