These guys have everything you need. I wanted to add an extension to my heat vents. The big box hardware stores were useless — none of them had even the standard sheet metal ducts to do the job. So I went to Slakey Brothers. I was greeted by a friendly staffer, told him what I wanted to do, and he found all of the bits and pieces that I needed, plus the stuff to put it all together. Note: Unilocal’s map doesn’t seem to know where Slakey Brothers is located. They are tucked in behind Lyngso off of Seaport to the east of 101.