Does this product work with 6" solid duct?
I see the installation instructions only mention insulated flex duct.
Thank you for your question on the 6” roof cap. Yes, this unit can be used with 6” rigid duct work.
Date published: 2013-10-23
Spring for this cap
Where do I get the spring for this cap. The house I purchased has this cap mounted in a side wall, and I need a spring to keep the backdraft damper closed, as there is about a 1" gap all the time. I am having a problem with the wind pushing down the pipe to the range hood. This causes frost on the pipe which later melts on to the stove.
Thank you for your question on the model 634M roof cap. The 634M is a roof cap and has a built-in gravity damper. This unit is designed to be installed on a roof and not on a wall. There is no spring for this unit.
Date published: 2014-11-07