... Software: AutoCAD, UG, CATIA, Solid works, etc Product Name flow damper,ventilation dampers,louver vents damper Item codeABSG001MaterialPlastic(ABS/HIPS ... the air volume.4. Removable core, four direction air flow , the windows are assembled with each frame, the windows ... s requirementsApplicationsidewall outlet type air distributionwe also offer other types of air grilles with OEM&ODM design service