Discharging air horizontally limits the throw to within several feet of the hood, allowing air to mix with the surrounding space.
Since the air will mix with the air in the surrounding space, horizontal design helps prevent tempered air from immediately being exhausted back through the hood
Perforated panels are located on the face of the external supply plenum to limit the throw to within several feet of the hood(s) and maintain laminar flow
Simple, flexible installation
The HSP is typically mounted flush with the top of the hood
External plenums can be placed on multiple sides of the hood to create a curtain of air on all exposed sides and increasing the volume of air brought in at the hood
430 or 300 series stainless steel to match hood