I own a bottom, top and side drawer cabinet KRL Snap-On set and I own a Harbor Freight 44" bottom box.
To say the Harbor Freight is the equal to the Snap-On KRL series of tool boxes that person is on some serious drugs.
The Snap-On KRL series tool boxes are head and shoulders higher quality over the Harbor Freight tool boxes. You don't want to spend the money on Snap-On fine but it sure gets tiring seeing these threads bashing Snap-On in order to try and justify your entry level Harbor Freight boxes.
My tool boxes hold 95% Snap-On tools, yes I paid for them and every bit of it is paid off. The other 5% is split up between Mac, Matco, Cornwell, OTC, AST, and a hand full of other specialty tools. Inventoried my tools and boxes not including the Harbor Freight box is valued at $51,248.16.
The fact is Harbor Freight tool boxes are not in the same league as the Snap-On KRL series of tool boxes.