A set of modular ventilation with different texture options. The kit includes modular ventilation elements that can be used to create air ventilation of any complexity, as well as mounting to the ceiling and walls.
Unreal Marketplace: https://www.unrealengine.com/marketplace/en-US/product/modular-ventilation-pack
Unity Asset Store: https://assetstore.unity.com/packages/3d/props/industrial/modular-ventilation-pack-176253
The package has several variations of materials, you can select and change the color by changing the material of the model to one of the available.