Hello, I am currently learning how to model and such. The one thing that is confusing me is sizing. Whenever I port anything from 3DS max to Unreal Engine the sizes are so off. Is there any references I could use for environment art or how would I go about doing this? Any articles, videos or anything I could read upon would be amazing. Thanks 
You should setup your grid to match UE4’s. 1 unreal unit = 1 cm. Also for environments, I find it useful to load up the UE4 mannequin as well. Good luck. =)
Aww, okay. So just as an example, a door would be 86 cm x 198 cm?
Also, off topic your work is amazing!