We are a leading supplier of Plumbing , heating and air conditioning system, we supply many flue accessories for heating system , oil boiler / gas boiler / heater, like the concentric coaxial flue kits in aluminum and stainless steel material , vent pipe elbow, double wall vent pipe , horizontal Flue kits , vertical flue kits in many sizes, like 60/100, 80/125, 75/100, 80/110, elbows at 45 degree, 90 degree , 135degree, pipe or extension pipe length like 500mm, 750mm, 1000mm, 2000mm, etc Other flue Accessories elements like vertical adapter, flue gasket, flue sealing , seals , pp end piece, end cap, flange , O ring, bracket, clamps and more.