Replacement Vacuum Low Draft Pressure Switch for the Lopi and Avalon Line of Pellet Stoves and Fireplace Inserts. ~ This replacement switch is manufactured by St. Croix Stoves. We guarantee correct fit and function for all Lopi and Avalon models. ~ This new style vacuum switch has two fittings, one positive pressure and one negative pressure. All Avalon and Lopi Models will connect to the negative pressure connection fitting. Fits Models: Avalon Pellet Stoves: ~900 Pellet Insert ~ 900 PS ~ Arbor ~ Astoria Bay PI ~ Astoria PS ~ Avanti PI ~ Avanti PS ~ Avalon AGP ~ Newport Bay PI ~ Newport PS Lopi Pellet Stoves: ~Fox Fire 400 PS ~ Fox Fire 400 PI ~ Foxfire PS ~ Elan ~ Heritage Bay PS ~ Heritage Bay PI ~ Lopi AGP ~ Leyden PS ~ Pioneer Bay PI ~ Pioneer PS ~ Yankee Bay PI ~ Yankee PS SAME DAY SHIPPING ON ORDERS PLACE BEFORE 2:00PM EASTERN TIME 50201 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