harmsco hb-20-0.35w 0.35 micron calypso water filter, 20 x 4.5-inch, blue is up for auction in Industrial & Scientific. The current bid is $1.00, 99% below the $107.53 MSRP, in As Is condition. Bid on this item at our Dayton - Edwin C. Moses Blvd. location before the auction closes.