This is a divider for stackable Black & Decker Stackable Bin Drawers, tested specifically with models BDST40730BK, and BDST40739BK but should work with any drawer with a 51mm width and at least 30mm of height for clearance and a 2mm wide slot.

The divider is designed with a grill to aid seeing though it a bit and also using less plastic. The examples here are just printed in white PLA.