$2 Single Door SHC Quick Office Low-poly 3D model by denniswoo1993. Available on CGTrader with 204 polys and 104 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 13.8 MB), 3DS (3D Studio, filesize: 6.92 MB), FBX (Autodesk FBX, filesize: 6.92 MB), DAE (Collada, filesize: 6.92 MB), SKP (Sketchup, filesize: 6.92 MB)