Standard Big Blue filter wrench is designed for 10" and 20" Big Blue filter housings
Fits Ace 45025 / 46764 / 49560, American Plumber WVC34 / W34 / WC34, Culligan HF-150 / HF-160 / HF-360, Pentek 10"STANDARD Housings with 3/4 CAP (150067, 150068, 150071, 150072, 150435, 150436), Pentek 20 STANDARD HOUSING with 3/4" CAP (150069, 150070), Pentek #10 3G STANDARD HOUSINGS with 3/4 CAP (150542, 150546, 150550, 150574, 150558, 150587, 150566), #20 3G STANDARD HOUSING with 3/4 CAP (150544, 150552, 150576, 150560, 150564, 150568), Pentek #10 & #20 3/4 Valve-In-Head Housings (150164, 150437, 150166), Omnifilter WC79-2P, OB5, YTB-10, YTB-20 and most other standard whole-house filter housings (Ametek, Plymouth,Value Line).