5" Double Paddle Fan Blade for Harman and Heatilator Eco-Choice exhaust blowers.  Works with the following models:

Harman Pellet: Advance, Accentra 52i, Invincible Insert, Invincible RS, Pellet Pro 38 Plus (P38 +), P43, P61, P61A, P68, PF100 (high altitude only), PB105, HF60, and XXV (25)

Harman Coal: DVC-500 Coal Stove (New style Draft Blower only) and 44 Magnum Coal Stove

Heatilator Eco-Choice: BH60, BH105, and BA100 (high altitude only)

This is the OEM Harman part # 3-20-502221