it is suitable for large room an adjustable drum louver throw large volume air and further delivery

Drum Louver

F-JP-A drum louver is mainly used for preference where the supply air from the diffuser has to travel a large distance to the occupied zone. This is the case in large rooms (halls, assembly rooms etc.), particularly when the distribution of air via ceiling diffusers is not possible or not practical. Here drum louvers are arranged in the side wall areas. When the temperature difference between the supply air and the room air changes, the supply air stream is deflected upwards (warm air) or downwards (cold air). The direction of the supply air flow is also affected by other factors such as local convection effects or draughts within the room. For this reason, Foshan Greenairsys design the adjustable drum louver to meet demand of warm and cool air. Drum louvers are designed for handling large air volumes and long throws making them ideal for buildings with high ceilings such as airport terminal buildings, hotel reception hall, shopping arcades, museums, sports, centres and departmental stores.

Standard Size(mm) as bellow :
SPEC   (NECK SIZE)	200	250	305	350	400	457	508	635	762
100
150
152.4			*			*
254							*	*
304.8									*

Drum Louver