Our DN4 national frames are used in British National and WBC Deep brood boxes and come flat-packed, in packs of 50. They are Hoffman style which means they are self-spacing and require no lug spacers. The dimensions of the frames are:
All our DN4 frames are 1st quality and contain no knots.
11 DN4 National Hoffman (self-spacing) brood box frames.
National deep wired premium foundation, pack of 11.
Frames are 1st quality and are flat packed ready for assembly.