Recommended for buildings with low ceilings, they are equipped
with horizontal air deflector blades to adjust airflow either up
or down. Optional vertical deflector blades are also available
to deflect air to the right or left, providing complete directional
control over discharge of heated air. Horizontal delivery units
are normally placed around the perimeter of the building where
heat loss is greatest, so that the air stream from each heater
"wipes" the wall to produce a blanket of warm air along the
outside walls.