Marco was purchased by Lenox and they no longer have the blower assembly part available (P/N 793696A). If I can't find an assembly anywhere, is it possible to get a substitute? Fireplace is a MARCO Galaxy S36-DV.

When I searched your part number I came up with this.

Lennox : Wood Heat Stoves and Solar, Sales, Parts & Service for Gas, Wood & Pellet Stoves. (http://woodheatstoves.com/lennox-m-11.html?page=24&sort=20a)

Here you go.

http://woodheatstoves.com/index.php?main_page=advanced_search_result&search_in_description=1&keyword=793696A