Insulated chimney type SLIM EKO Application Metal insulated negative pressure chimneys type SLIM EKO applied to carry off exhaust flue gases from heating units, which constitutes a separate construction based on a support or fixed to walls of buildings. With their construction adapted for difficult working conditions, SLIM EKO chimneys are dedicated to meet the needs of 5 class solid fuel boilers. Fuel Oil, gas, wood, solid fuel Specification Material internal - acid-proof steel 1.4404; insulation – mineral wool min thickness 30mm, R≤0,4 m2*K/W external – acid-proof steel 1.4301 Material thickness 0,8mm Working temperature 120 °C - 450 °C Diameter range 130mm, 150mm, 180mm, 200mm, 225mm, 250mm, 300mm, 350mm*, 400mm*, 450mm*, 500mm* * non-standard diameters, individual pricing Certificates Technical description Declaration of commercial properties