Damper HVAC Low-poly (Polygon mesh 3D model) is available on CGTrader for $39. Original author: mrittman. Specs: 218344 polys, 219049 verts.
C4D (Cinema 4D, filesize: 1.05 MB), OBJ (OBJ, filesize: 32.5 MB), FBX (Autodesk FBX, filesize: 1.19 MB), 3DS (3D Studio, filesize: 10.3 MB), TEXTURES (Textures, filesize: 36.9 MB)