Installing a Fireplace Blower (GFK4 / GFK4A) in Heatilator Natural Gas Fireplace

My fireplace is a Heatilator, and the blower is a GFK4A. I got the blower from www.fireplaceblowersonline.com, and they have a really good video on how to install it here:
GFK4 GFK4A Fireplace Blower Kit Insta...