Stainless double wall from Menards. Anybody know if they offer a cap to seal this off? After the morning rodeo in my living room yesterday, I think I might cap off my pipe for the summer. Between the bird in the pipe, 2 dogs going crazy and my wife adding in her advice on how to get the bird out of the house I think capping it off sounds like a good idea! By the time I got the poor bugger out of the house it looked like he may have done my spring sweep for me. Any advice?