Hello all, I have a new, unopened, unused INRAD roofing filter kit for Omni 5, 6, and 6 +. Makes a great rig even better. If you're not familiar with this filter kit, see https://www.inrad.net/product.php?productid=210&cat=90&page=1 for a good description on the item. Price is $110, plus shipping. 73 de Steve, NR4M