... plastic damper 1.Martrial:ABS or HIPS 2.Removable core,4 way air flow 3.Durable,adjustable 4.easy to install flow damper ... ,ventilation dampers,louver vents damper vent dampers volume damper duct damper Shaping Mode: plastic injection Mould Steel: ... Solid works, etc Product Name flow damper,ventilation dampers,louver vents damper Item codeABSG001MaterialPlastic(ABS/HIPS) Colorthe ...