Pass ISO9001 certificate For HVAC system Aluminum Material, Thick: 1.0mm Size: 600x600mm Air Diffuser, Air Grille Air Ventilation KitAir DiffuserFeatures:1) Used for air-conditioning and ventilation systems2) Air diffusers, air dampers, PVC flexible ducts, silent/ square/ rectangle insulatedflexible ducts, laminated aluminum foil, spread air outlets, demountable air outlets,diffusers and double- ...