4.9 
Standing Water
This floor liner hold water in creating an unhealthy environment.
Dark and Dirty
The liner does keep some things out but keeps other things in. The environment is still not controlled.
Storage Space Below
A controlled environment this large is perfect for additional storage.
Clean Encapsulation
20 Mil, multiple layers think, CleanSpace creates a much nicer environment. The liner is tough enough to handle workers crawling around without worries of rips or tears.
