The A4 room is the smallest, most intimate space @ AE Harris. It has two annoying pillars but it is easy to black out and easy to keep warm. It has a rubberise floor. There are windows onto Northwood Street currently covered with shutters, but these could be opened. It has a low ceiling and is often used as a seminar room or rehearsal room.

This space was the location for the Stan's Cafe installation Final Steps and BoXed Productions contribution to Pilot Night in 2009.