At just after 5pm this evening, the building assignment was struck for 716 E 7th ave in town, bringing Companies 18(Folsom), 43(Holmes), 49( Milmont Park), 67(Woodlyn), 62-7, Ridley 7, and RIT 14(Swarthmore). Engine 18-3(9A) arrived to heavy smoke and fire from the rear of a split level twin and led off with an 1 3/4" handline while Squrt 67 layed in a 4" supply line and stretched a back-up line. 18-1 reversed out from 18-3 to 8th and Evergreen for an additional suppply line, while Ladder 43 took the rear to start opening up the roof. Additional crews checked the exposure building. After the quick knockdown, a PPV fan was set up and crew performed extensive overhaul. No extension was found. The fire was held in check to the room of origin, in part, to the resident closing the door to the fire room upon discovery of the fire. Excellent job to all crews, especially the first in Hose team.