Product Type Duct Adapter, Compatible with Product Type Indirect-Fired Portable Oil & Kerosene Torpedo Heaters, Compatible Grainger Part Number 5PFW8, Compatible Mfr. Model Number HVF110, Overall Length 8 in, Overall Diameter 13 in, Vent Diameter 12 in, Thickness 0.03 in, Maximum Operating Temperature 350 Degrees F, Material Steel. This item has been restricted from sale in the following state (s): []