Outdoor Wood Boiler Maintenance Kit- with 8 feet of Fire Rope Outdoor Wood Boiler Yearly Maintenance Kit- Meets or exceeds all boiler manufacturer nitrite warranty requirements. 8 ft of Fiberglass Braided Rope 1, 10oz tube of Professional RTV Black Silicone One gallon of ProTech 300 can treat approximately 300 gallons Everything you need to maintain a great running Wood Boiler