Firefighters rescued a woman after she fell four stories and got stuck in a tiny gap between two buildings in Brooklyn on Monday night, Fire Department sources said.

The woman, who is in her early twenties, tumbled from the roof of a building and wedged into the tiny space, which was around 2 1/2-feet wide on Madison St. near Broadway in Bushwick around 9:30 p.m., an FDNY source said.

Two firefighters were lowered into the gap and used a tool to extricate the woman, fire sources said.

She was rushed to Kings County Hospital in serious but stable condition after the 45-minute rescue, authorities said.

The woman may have been intoxicated when she took the spill, sources said.