The external size is the same as the national although the frame size is different.
British standard bee hive frame dimensions.
These are the side bars for the shallow frames.
The hoffman shallow frame dimensions are shown in the drawing above and the deep 14 x 12 frame is in the drawing below.
Drill two 1 8 holes 1 3 4 apart and centered along the long.
These are the top bars for all the frames.
The main boxes are 18 460mm square in footprint.
Cut a saw kerf groove centered along the entire length 1 8 wide.
Length of the side bar.
These are the external dimensions of the british standard brood frame that has the shorter 19 mm lugs.
There is also some usage of it in hive boxes that are designed on the same footprint as the langstroth hive and usually carry 13 such frames arranged across the box.
Commercial hive is also known as 16 x 10 and has a larger volume.
No part of any hive box apart from lug seating parts should be more or less than a bee space from any of its parts.
Bs national standard brood box with frames shown through cutaway two frames removed to show detail.
The standard brood boxes being 8 225mm tall and the shallow super 5 150mm tall.
17 x 1 1 16 x 3 4.
It is suited to more prolific bees and is an alternative to brood and a half or langstroth.
1 x 6 clear pine.
5 9 16 x 1 3 8 x 3 8.
The above are the external dimensions of the hoffman type british standard brood frame.
The main walls are 19mm thick.