*PLUMBERSSTOCK EXPERT* responded:
Hello, good day! Thank you for asking assistance from the PlumbersStock team. This Wiliams P322660 gas valve fits the following gas furnaces: Montery Top Vent (2509821, 3509821, 5009821), enclosed front-vented hearth heaters ( 2001621A, 3501521A, 5001521A, 6501521A), and fireplace front-vented hearth heaters (3502521A, 5002521A, 6502521A). If you own one of these units, then this gas valve is what you need. We hope that this helps. To order, simply click on Add to Cart, enter your information in the required fields, and we will have it delivered right to your doorstep. Enjoy shopping @ PlumbersStock.com. Have a great day!