Plano has several 3700 series boxes, that can be confusing. While these are the base models, and are great for most uses, the variations between them can be frustrating. Ordering these can be difficult, in that I ordered the 4-pack twice in less than 6 weeks, and got TWO different variants of the 3700 (4 of one type in the first order, 4 of the other in the next). Note that the "from the manufacturer" statistics for the boxes only give the length and depth - which are common to all versions - but the front to back "width" is actually different, as are the number of potential partitions. The "up to 24" is based on the number of dividers provided (20) in both boxes, but one (the one with the weaker latch) actually has about twice the number of possible partitions (over 40). And that's the one pictured in the official pictures on the Amazon page. There's at least 3 different latching systems used across their line of 3700-size boxes. * The lowest quality ones have a tendency to pop off after constant use, as they are basically held on by friction and being molded around the lid plastic. * The middle-type are more durable and tend to hold better, but also tend to cost more. * The third common type is on their line that is basically made to seal a box close to watertight, and involves side clamps and gaskets. * There's also a new, 4th line (Edge) that are even more expensive, but the construction bears little resemblance to the others. (There was even an older line which used latches molded with the lids, that you can find occasionally in tackle boxes from the 1990s, and is still used on some of their very small boxes). The attached photos show the types I own. Top: molded-in 1990s style latch. Middle: the cheaper latch, found on the boxes with the greater number of divider positions, Bottom (gold): the more sturdy latch type (pictured are the latches of a 3750 Stowaway, but my second order of the 3700 4-pack had these latches in blue) Your colors may differ (Even Plano's own site shows both these latches in Yellow, Blue, Maroon and other colors, across different boxes). The cheap (blue) latch boxes are externally just under 9 inches from front to back across the lid, between 8.5-8.75 inches (with partitions) on the inside, with two areas less than that around the latches, that cannot have partitions. These are the ones with over 40 possible partitions, and may be a discontinued model. The mid-range latch boxes are a little over 9 inches externally, internally the contents area is about .25 to 0.5 inches smaller than the other(though with the areas behind the laches capable of partitioning). As a result, the dividers are slightly different sizes between types (and won't necessarily fit. They also have slots for only 24 possible partitions (twice the size of the smallest partitions of the other - or even the top two rows of a 3750 - see later) There's also a thinner 3700-based box (3701), and deeper 3700-based boxes (3730/3731/3780), which is fine for use on a shelf, but the thin one will rattle around in a rack-based 3700 carry system, and the deep one won't fit most of them. However, both work fine in the bag-based carry systems. The deep boxes tend to work best for bottles (paint, fishing plugs, etc), spools and photo slides. Lastly, most 3700 carry systems seem to ship with the 3750 boxes these days, not the base 3700s. The 3750s only have two regular rows (capable of 11 partitions up to 12 areas per row), and a double-wide row in front (that has its own partitions and only 5 slots to turn that area into 6 spaces). The 3700s have the four mostly-identical rows (see the notes about the ability to partition by the latches on the cheap-latch ones). I actually bought these to REPLACE 3750s in a couple Stowaway carry cases, because I have far more things that I can fit into small/medium compartments that would rattle around and break if I tried to carry them in the front half of a 3750.
