Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download 3D Showroom Level Kit Vol 1 Free.
3D Showroom Level Kit Vol 1 v1.1
3D Showroom Level Kit Vol 1 is a prefabs kit (40 prefabs), to help you to create high tech neutral showrooms interiors, to present your products (for presentation, events, etc…).
You can create large rooms or separated with walls or with corridors!
And personalize your own showroom with your logo and light setting. Scene provided into the pack.
Package included into the bundle :
★ 3D Package Bundle 01 ★
Take a look on the :
★ Volume 1 ★
★ Volume 2 ★
★ Volume 3 ★
★ Volume 4 ★
★ Volume 5 ★
★ Volume 6 ★
★ Volume 7 ★
★ Volume 8 ★
★ Volume 9 ★
★ Volume 10 ★
★ Volume 11 ★
★ Volume 12 ★
Do not forget to read the readme file! no complicated building rules. Just duplicate/move the elements for your needs, and play!