Iron Lung is officially a box office monster. Markiplier’s directorial debut horror film is already in the black just one day into release. Made for under $3 million and self-financed, the film pulled in $3.5 million from Thursday previews alone, before even hitting wide release. By Friday, estimates put it at $8.9 to $9 million, pushing the two day total to roughly $12.4 million and quadrupling its budget in under 48 hours. Due to overwhelming demand, the release expanded from 60 theaters to ov