Description Heatilator Eco Choice 5" Single Paddle Impeller, 3-20-40985 The Heatilator Eco Choice Combustion/Exhaust blowers require an impeller to aid in keeping air blowing thru the pellets to keep them blazing and to exhaust the smoke out of the stove thru the venting. The impeller can become damaged thru annual cleaning or if they become seized onto the post of the blower and cannot be removed when replacing that part. If the impeller has become warped or otherwise damaged it should be replaced. This is the replacement 5" fan blade for Heatilator Eco Choice part number 3-20-40985. This part is compatible with the following Heatilator Eco Choice Stoves: BA100 Formerly Part #PP79123 SAME DAY SHIPPING ON ORDERS PLACE BEFORE 2:00PM EASTERN TIME Next day air shipping for Saturday delivery note to all buyers: All orders placed on Fridays will arrive the following Monday/Tuesday depending on location or holiday schedule. does not provide that shipping option. Thank you for your business 24/7 Parts