Flame Guide for Harman and Heatilator Eco-Choice Pellet Stoves.  Works with the following models: 

Harman: Accentra Cast (FS), Invincible Insert, Invincible RS, Invincible T, Pellet Pro II, P38 Pellet Pro +, P61, P61A, PB105, and PF100

Heatilator Eco-Choice: BH105 and BA100

This is the OEM Harman Part # 3-00-08534.  Compatible with part number 3-00-00225.