Home / Shop / Burners, Parts, and Accessories / Power Flame Type C / C4/C5 / APEM Potentiometer Knob, PFI 480560 APEM Potentiometer Knob, PFI 480560 SKU: 10002334 Categories: C4/C5, Webster Description Description APEM MPKES90B1/4 Potentiometer Knob. 679-3545-ND PFI Part number 440450 Call for quote: 780-955-2723 or email info@arcticboilers.com Related products Power Flame, C4/5 Pilot Mounting Plate Assembly PC, PFI C24130 5 Amp Low Peak Dual Element Time Delay Fuse, PFI 926120 Power Flame, C4/5 9-1/2 Inch Choke Assembly PC, PFI C22210 Honeywell, Q7999A-1005 Wiring Subbase, PFI 391010