My 14G and 7G uni tanks both have FTSs heat and cool, and neither came with a controller mounting bracket. Ss doesn't list this part to be included in the package, and the pic of the FTSs heat/cool kit is very specific not showing the bracket.
You can order a powder coated black controller bracket from Ss, but it specifies this bracket is not for use with the Uni tank series. It works only with the conicals that have a threaded nut on the thermowell. Looks like this device won't fit around the TC ferrule and nothing is there to hold it in place. It is possible that some of the owners are fabricating their own from sheet metal stock or similar.
They do look convenient and I hope someone weighs in to tell us more.
In addition to the black powder coated bracket there is a stainless TC bracket that comes with their 20 gal brite tank ftss. (I don’t own a uni. Just a chronical and 2 brite tanks) I’m not at home but here is a pic from their website.