Model of a flat soffit truss.

Name: Light
Type: model
Format: 3Ds Max 2015
Export: OBJ, MAT
Render: Corona (15) Vray (5)
Polys: 223169
Verts: 229700
Units: Centimeters
Dimension: 410.07 x 75.94 x 260.47

Those who work in a V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever is preferable for you.

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR.