Industrial ceiling assembly kit.
Made for corona render 1.5 and vray 3.2. Suitable for visualization of industrial facilities hypermarkets gyms offices and other industrial and commercial premises. Easy snapping on auxiliary objects. Helper objects are excluded from rendering.
The set includes:
FLOS Infra-Structure luminaires;
air conditioner Hitachi Silent Iconic;
Hanwha XNP-6040H surveillance camera;
cable
fire extinguishing system with sprinklers;
ventilation ducts.
Suspended metal panels.
All materials have unique and logical names combined in a Multi / Sub object and assigned to objects.
The vray materials are configured properly.
In vray version BRDF materials are installed in Microfacet GTR / GGX vray 2.4 owners need to install BRDF in Blinn. For Corona render it is recommended to install a version not lower than 1.5 since the glossiness of the materials is adjusted taking into account PBR.

Detailing of models is suitable for close angles.
Other kits on this topic:

https://3dsky.org/3dmodels/show/kommercheskaia_elektrika_i_pozharotushenie_vray_ggx_corona_pbr 
https://3dsky.org/3dmodels/show/vientiliatsiia_vray_ggx_corona_pbr 

Beautiful renders to you!