Abstract: A sidewall fire sprinkler head includes a frame with tubular body and a deflector supported from the frame. The deflector has a face portion, generally planar, which is supported generally perpendicularly to a longitudinal central axis of the frame, and a generally planar canopy portion, which is supported from the face portion on an upper side of the face portion and oriented generally horizontally when the sprinkler is installed. An opening between the face portion and the canopy portion permits water to pass through the deflector and be directed by the canopy portion to the remote side of the protected area directly opposite the sprinkler from the remote corners of the protected area. At least one additional opening is provided on the lower side of the face portion below the central axis.