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.
- 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
Fill in your email below to request a new password. An email will be sent to the address below containing a link to verify your email address.