Product Type Flue Stack Compatible with Product Type Indirect-Fired Portable Oil Kerosene Torpedo Heaters Compatible Grainger Part Number 5PFW8 5PFW9 5PFX0 5PFX1 Compatible Mfr Model Number HVF110 HVF210 HVF310 HVF410 Overall Height 18 in Overall Length 18 in Overall Diameter 6 in Vent Diameter 6 in Thickness 0.03 in Vent Type B Vent Maximum Operating Temperature 350 Degrees F Material Aluminum Includes Rain Cap