Below are guidelines to help choose the right unit size.
10X10 – use as a tool shed | typical 2 BR apt or house | about 200 file boxes
10X15 – room for both bicycles and motorcycles | typical 3 BR apt or house | about 300 file boxes
10X20 – like a storage shed away from home | typical 4 BR house | about 350 file boxes
10X25 – typical 5 BR house | about 400 file boxes
10X30 – vintage car | about 450 file boxes
10X40 – drive through unit, work trailer
20X20 – 2 car garage