Williams Furnace Company 12B40 Observation Door and Gasket


Williams Furnace Observation Door also known as a Peep Hole Cover Assembly. The Observation Door also includes the P100100 Gasket.

It is for use with several Williams Furnaces including:
  • Direct Vent Wall Furnace 14K, 22K, and 30K Models
  • Forsaire Counterflow Direct Vent 4007 Standing Pilot models, 6007 Series, and 5507 Series
  • Gravity Vented Floor Furnaces 4505A and 6505A
Click here to download the replacement parts lists and exploded view diagrams. Please refer to the appropriate section for your specific furnace.
Current stock: 0

Please call Williams Furnace Technical Support at 888-444-1212 to confirm the correct part required for your specific furnace needs. You will need the model and the serial number of your specific furnace.

Usually Leaves Warehouse in 2 - 3 Business Days
Calculated at Checkout

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