Home About Us Shipping Returns View All listings Store categories Store home Outdoor Wood Furnace Brands (306) Central Boiler Maintenance (61) Central Boiler Chimney (17) Central Boiler Electrical (16) Central Boiler Heat Exchangers (30) Central Boiler Unit Heaters (25) Central Boiler Misc. (16) Taco pumps And Supplies (39) Door Gasket Material (84) Hydronic Manifolds (893) Other (14) See all items in the store Product Description ASHTROL, 2 X 6.25 LBS. Specifications: Used as a furnace firebox pH modifier. ABOUT US Authorized supplier of Central Boiler Parts and all other Outdoor Wood Furnace supplies. Your One Stop Shop for Outdoor Furnace Installation Parts Info: We specialize in supplying our customers with quality parts for a complete installation! We have anything you will need including: Insulated Pex Piping, Plate Heat Exchangers, Hot Water Forced Air Coils, Pool Heat Exchangers, Hot Water Unit Heaters, Pex Tubing, Circulator Pumps, Aquastats, Valves, Fittings, etc. Also stock complete line of Door Gasket Material for all Pellet Stoves, Wood and Gas burners, Don't see it listed Ask. SHIPPING Fast Next Day Shipping. Since many orders are 3rd party shipment, tracking may be delayed or unavailable. We will update you if any information is received. RETURNS Returns not accepted, unless DOA right out of box. Manufactures Warranties apply. Questions Questions, reach out to us via the message service.