Box 46-1 toned out around 1742 hours for a reported house fire at 208 E. Main Street in the Borough of Hummelstown. Multiple calls were being received for the incident. Truck 46 arrived on location with fire showing from an occupied, 2.5 story, duplex impinging on the "D" side exposure. A hand line was stretched quickly knocking down what appeared to be a fire that started on the exterior, spreading upward, and melted the siding of the unattached exposure. The fire did make its way up the void spaces to the attic where crews had to hook ceilings to prevent extension and extinguish hot spots. Additional companies arrived to check exposures and throw ground ladders. The fire was placed under control in about 20 minutes with Company 46 (Hummelstown) remaining on the scene for about 3 hours. Eight families, including 12 adults and 6 children, were displaced in the fire.