UL-1738 Listed Gas Vents are Shipping.
We finished an interim UL Listing for UL-1738 (interim as UL-441, UL-641, and UL-1777 testing is still being finalized).
The main reason for the delay is that we are now UL testing with cut mineral wool insulation and also a thinner gage inner material, this variation of DWKL is coined DWKL-Vt (as well as SWKL-Vt single wall). DWKL-Vt will be best in market, easiest to install, and of course priced right!
Jeremias uses only UL/ULC Labels and is proudly Made in the USA.