As a result, the frames were cross-attached by burr comb and propolized to the supporting strips and were difficult to remove.

In 1848, Dzierzon introduced grooves into the hive's side walls replacing the strips of wood to hang top bars.

The grooves were 8 mm (⅓") wide and met the distance requirements for a bee space.

Confusingly, the "Langstroth frame size" is one; minor variations on it are widely used in modern US beekeeping.

Frames can be outfitted with wax foundation, starter strips or left empty for bees to build the entire comb.