Yeah, I could not remember off hand but 1/32 could be right. They are pretty tight and certainly LOOK a lot better than the FC damper.Can't say that I'm too impressed with the build quality of your damper. My VZ damper has a consistent 1/32" ( if that ) gap around the whole damper.
@brenndatomu - I thought the Field damper was the iPhone 12 of barometric dampers ? Based off of the picture that @TDD11 posted, the build quality looks like the Motorola click to talk phone I had in the late 90's
I have a 26' 5.5" interior chimney. I was targeting .06-.08"WC because I had misremembered the stove specs and thought that was the desired range. I have adjusted the Fields damper for a max of .06"WC now.I'm not sure if it is the way the picture was taken or what, but that appears to be a larger gap than I have...but still isn't enough of a leak to make you lose a noticeable amount of draft...unless your chimney is super marginal...what are the chimney specs again?
Why are you running your draft so high? -0.04 to -0.06" is what is spec'ed.
I dunno...maybe VZ makes different models...the one I looked at in the store looked like it was made from a Bushes Beans can...spray painted black and a hinge tack welded onto the "flapper"...no adjustment of any kind, didn't operate smoothly...I couldn't get it back into the box fast enough.
And just so y'all are aware, those Field dampers need to be dead nuts level or the flapper will always work its way to the low side and could hang up...if level they are buttery smooth.
I wanted to get a draft regulator installed because it would run well over .12"WC without. This year in general, and even with this Fields regulator installed, It seems like my burn times are shorter this year than previous winters. It's a good thing I am working from home so far this winter, because I don't know that I'd have many coals left after 10 hours right now.
The VZ damper I had, I had installed 4 years ago when I still had a clay lined chimney. I removed it from the system because of smoke spillage issues with the door open, and was trying to eliminate any draft leaks. I kept the VZ damper though, and was going to reinstall it with my new setup recently, but could not get it's ID to accept the telescoping pipe OD. I think I bought it from Menards by the way.
The fields is definitely very smooth!
I wish!!I just checked mine...more like 1/8"