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

Harman: Accentra Insert, Accentra 52i, HF60, P35i, P43, P68, and XXV

Heatilator Eco-Choice: BH60

This is the OEM Harman Part # 3-00-03000.  Compatible with part number 3-00-674069.