Meet us at:

10th & 11th Jan 2023

Cereals 2023
13th & 14th June 2023

Midland Machinery Show 2022
16th & 17th November

Confidence in our design,
materials and care in
manufacturing and installation
is reflected in our
10-year warranty.

FLR Crop Drying is a brand
of Flach & Le-Roy Ltd

Store Capacity

How high can I fill my store and what are the factors that limit the amount of crop that I can safely load and dry?


  1. The storage height depends on the design height of the store – don’t overload!
  2. For grain drying, storage height is normally 10’ or 12’ deep.
  3. The size of the fan dictates the drying capacity of the store.
  4. Generally work on 100 cubic feet per minute (cfm) per ton of crop e.g. a 30kw fan producing 30,000 cfm at 4.0” standard water gauge pressure will dry 300 tons of grain at one time at 10’ deep. e) The pressure that the fan has to work against to force the air through the crop is dictated by crop type, storage depth and ventilation rate.
  5. The optimal ventilation rate for grain is 20 ft/min through the crop at 8’ to 10’ deep and 24 ft/min at 12’ deep.