The outside dimensions correlate with the National measurements, but the inside measurements are wrong because the plywood is not as thick as a normal hive. In other words, the bee space is wrong and has to be corrected by putting another sheet of plywood in the back of 8mm and also above the runners similarly. The circular entrance is rubbish. It is situated for no apparent reason about 2 inches above the base and gives the bees no way of guarding their hive. II have had to block this off and make a proper entrance at the base. which will then allow a mouse guard to be fitted in the winter time. The base of the nuc. is of extremely poor quality. Cheap but certainly not cheerful!
Beware thiscis a deep nuc 1.5 brood depth. Which is not mentioned in the description. Have had to cut mine down. Well built though so worth the hassle.
Good quality very quick delivery
Although basic, it is perfectly suitable for its purpose. Part assembled, with roof and floor not attached, makes it easy to adapt should the need arise. Thin metal roof covering (dented on arrival), and a mesh varroa covering the complete floor needed minor works but, once treated, I expect this nuc to last for years.
One warning, this is advertised as a standard national but is actually a 14 x 12 deep national.
Good product and service. Recommended.