Dear Sir/Madam, Type:HVAC Systems Material:Extruded Aluminum or ABS Use:Supply air vent of fan coil and central air conditioning system Finished:Power coated or Anodized Color:RAL Series Standard Colors Shape:Square and Rectangle Size:Any size is available Quality:Only provide hight quality products Installation:Easy to install Maintain:Maintenance-free Customized service:Accept and can help customer to design & produce Show More