°STELPRO has the space-saving solution for heating small entryways, hallways and lobbies: the sturdy, reliable ACF ceiling fan heater. Built to last, the ACF pushes heat downward, mixing with the cold air below. It can be surface mounted or recessed into conventional ceilings, or recessed in suspended ceilings. Whether installed in an entryway or hallway, the ACF has all the heat you need in an enclosed space.