The set contains, the VENTS ventilation system together with the unit here is the link http://vents.ua/cat/air-handling-units-heat-recovery/ Fire hydrant system and a smoke detector. Suspended cable suspension system 3 types Plus, the bonus is a lamp for the office Pendant Lights lamp LED here is the link https://www.aliexpress.com/item/Upscale-chandelier-lighting-aluminum-straightedge-office-Pendant-Lights-lamp- LED-light-120cm-light-white / 2049689909.html? Spm = 2114.10010208.1000016.1.dD5acK & isOrigTitle = true Information on the scene of the files Max 2015 and 2014 plus obj all the textures are in the same folder, there are 3 customized colors, but if desired, you can assign Through a diffusion any color. The shader simulates painted slightly rubbed aluminum. PS Have a good work for you