A good value for the price with many uses beyond the usual document filing including spare parts tools hardware test equipment etc.. Great for organizing and retrieval with ample areas for marking contents. The slot handles allow easy pull/ pickup with average loading. The container size-depth fits most standard size shelving units. I had good experience with these storage boxes while working at Lockheed Martin prior to my retirement in 2012. I have continued to use these boxes now for personal use and in my part-time consulting service. As anyone knows being able to organize and stay organized allows you to be more effective and less stressed.
I used these boxes to organize some things at my Mom's and they were perfect. Just big enough for things without being so big it's then too heavy to move. Love how they stack up and are uniform size.