... HIPS 2.Removable core,4 way air flow 3.Durable,adjustable 4.easy to install hvac damper,damper hvac systems hvac duct ... , CATIA, Solid works, etc Product Name hvac damper,damper hvac systems Item codeABSG001MaterialPlastic(ABS/HIPS) Colorthe frame is natural, the adaptoris ... as register to further control the air volume.4. Removable core, four direction air flow , the windows are assembled with each ...