Here's mine with apx 6.4 tons of rice in place. 88" x 88", comes up 48" or so.
For 20 yrs, I would tape around the door with shipping tape when shoveling bituminous coal in, and still get some dust around the hinges and such. This anth was three loads on my trailer, and one of the loads was shoveled in without a door even on the bin room. Still no dust [rice was just a tad moist].
Btw, I installed the pulley on the auger [pics on page 39], and I can fill a 5 gallon bucket in about 1 minute turning the pulley by hand. I hope to get the auger powered up this week. Have to find a pulley for the somewhat uncommon 7/8" output shaft on gear box [limited selection of 7/8" bore pulleys in stock locally].