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This unit is for use with LB White heaters only. Do not use this item with any other brand of heater.LB White® ignition control module for all Guardian® direct spark ignition (DSI) forced air furnace heaters (LP & NG).Fits LB White® Guardian® heater models:• AD060• AD100• AD250Replaces LB White® part numbers: 524900, 22461, 24900