Standard & Non Standard Box Designs
The Standard Sizes for Potato Boxes are as follows ;
Length - The overall length is 1830mm
Width - The standard width is 1193mm, although some customers have remained
on the imperial 1220mm ( 48 " ) standard.
Height - An overall height of the box varies from one customer to the next,
but as a general guide the heights fall into three categories
a ) 914mm overall. This box nominally holds 1000kg of potatoes
b ) 965mm overall. This box nominally holds 1100kg of potatoes
c ) 1070mm overall. This box nominally holds 1200kg of potatoes
Variations of dimensions are possible, but must fall within the
dimensional limits as set out in BS7611, further details can
be obtained by request.
Base - The base can be either an " open " type where the box tippler
MUST support the top of the box during unloading, or a " closed "
type where there are " box length " bottom boards, and can be used
for example on a forklift rotator attachment.
Gaps - Boxes can be supplied either " open " or "close " boarded.
The prefered gap for openboarded is a nominal 26mm, other
customers prefer variations down to 10mm, depending upon
potato size and type.
Closeboarded boxes are what they say, but we do prefer to leave a
small gap approximately half way down the box to allow for
swelling of the boards when the box is in wet conditions.
Other Notes About Our Potato Boxes
Finish - All timber is fully planed with rounded edges where required to
reduce crop damage bruising etc, diagonal braces are chamfered
on the bottom edges to reduce crop being left in the bottom of the box
Preserves - Box makers cannot treat boxes with any preservatives, because
at present there no known " food safe " preservatives available
on the market.
Metalwork - All nails, nuts, bolts, washers etc are ALL zinc plated for a much longer
The nominal plating thickness is 9 - 14 microns, and although a white
powdery finish appears on zinc after a while in the wet, this is
perfectly normal and is only surface scaling.
A typical " closeboarded " box with diagonal braces and bolted centres.
This arangement at the bottom has the effect of sandwiching the centre post, and dramatically reduces the box from bowing out when full, making safer stacking possible.
A typical " Openboarded box with bolted centres. This arrangement at the bottom has the effect of sandwiching the centre post, and dramatically reduces the box from bowing out when full, making safe stacking possible.
An openboarded sides, and closeboarded ends type of box is used for ventilation systems such a plenum wall / letterbox systems where air is not permitted to escape from the 4' ends.
We can also produce boxes using the gangnail plates, but wouldnt recommend gaps any more than 10mm. Our nailplates conform to BSEN 10147
Other types of boxes come in a whole variety of shapes and sizes to suit for many other products and purposes. Shown here is a gated bin for use in hopper / silo filling systems and also for emptying seed potato.
Materials - Russian and Scandinavian redwood timber is used for all
components of our boxes. These types are slow growing
producing a very tight grain and has excellent machining
and nail holding properties. This timber is very suited for
use in modern chilled stores where moisture can be
This is our typical 1 tonne or 1.1 tonne openboarded box with 26mm gaps all round allowing an adequate airflow for most stores.
Portable Log Stores are now becoming popular, as they are easily transported around yards for easy filling. The fronts are open for access, with the back and ends having 25mm airvent gaps.
The front centre post is retained for use during multi stacking as it is a load bearing component.
These boxes can also be made to customers own specs and dimensions.
Farm General Waste Bins
can be built to individual
sizes and requirements. These
are designed for everyday
use and rough handling.