Semi-Pro
Full-Pro
I would get this one. you can use the variable speed controller or not.No idea on the fireplace insert, but maybe this can help. Pics show vent openings on right and left sides of the fireplace and there is a vent across the top of the insert as well. The solid plate across the bottom is removed, showing the hanging box I described. No heat felt in that bottom section where the plug is located, so I assume a fan is intended to be in that hanging box?
BLOT (26D0748K) Blower Kit for Majestic, Martin, Monessen and Vermont Castings Fireplaces
BLOT (26D0748) blower kit for Majestic, Martin, Monessen and Vermont Castings fireplaces. Made in USA, pre-wired, easy to install, 100% ball bearing, quiet & efficient.
fireplaceblowersonline.com