Supco CH5002 Oven Bake Baking Element Direct replacement for Frigidaire 318255006, AP5590131, 09990063, 2220750, 318255000, 318255002, 5303310512, AH3633414, EA3633414, PS3633414. About Supco Founded in 1945 in the Bronx, NY by two naval engineers, Sealed Unit Parts Co.,Inc (SUPCO) originated as a service company for refrigeration systems. We bring continued product line expansion through in-house development, master distributor relationships, and acquisition. This strengthens our position as a leader in the HVAC, Refrigeration and Appliance industries.