damages home A Phoenixville family of three escaped with minor injuries when fire destroyed the ground floor of their home Wednesday night. Mr. and Mrs. Edward Selfinger, 124 3rd Ave., were treated and released from Phoenixville Hospital for shock and smoke inhalation in a fire State Police estimated caused $40,000 damage to their home. A son, Edward Jr., 30, did not need hospital treatment. State Police at Embreeville are investigating the fire , which they called “suspicious,” but by Thursday, the cause was listed as “undetermined.” Phoenixville Fire Chief Thomas Fink said he and State Fire Marshal Brian McDevitt and Chester County Marshal William Winter ‘‘have suspicions” about the blaze, but know it was not caused by arson. Three Phoenixville fire companies, Friendship No. 1, Phoenixville No. 2 and West End No. 3, controlled the flames after over two hours of battling. Fireman John Gombarik was slightly injured, said Fink, but did not need treatment. The fire sparked around 7 p.m. in the first floor bathroom, next to the kitchen dining nook, where Selfinger, 57, and his son were eating supper. Mrs. Selfinger, 53, was in the upstairs bedroom, dressing for evening services. Selfinger’s neighbor, Richard Gleason, saw smoke, thought his basement was on fire, and ran outside while his wife, Joan, alerted police. Gleason met Edward Jr. outside and the two propped a ladder against the house, to rescue Mrs. Selfinger. Selfinger had meanwhile climbed the back stairs of the house to reach his wife, but heavy smoke prevented his passage. Mrs. Selfinger escaped down the ladder, overcome with smoke and shock. Fink said the kitchen and nook and most of the first floor were destroyed. Smoke and water damaged the upper stories.