The fixed type return air inlet has good air outlet performance with elegant outer frame, it is usually used as return-air intake for toilet, decoration of lift, pipeline opening and service port, it is also used as air outlet opening on the outer wall. it can be equipt with fliter behind air opening according to needs.

Spercification:
600x600mm,neck size 475x475mm
450x450mm,neck size:325x325mm
300x300mm,neck size:175x175mm

surface treatment: ventilation grills,ventilation grills
made of aluminium,four-sided air supply pattern

application: arranged for built-in system ceilings.both for
supply and exhaust of cooled or heated air.

thickness: 0.5-1.0 mm

the prodect can be produce customized