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CA39PB-90. 65 lb. capacity x 4 = 260 lbs., low profile of only 2 5/32" height. The lower the profile, the more stable it will be. This is a tall package with a narrow footprint, not ideal for casters but if you keep them small in height and install them as close to the outside corners as possible, it might be OK with careful handling. I usually do not consider casters on anything under 18" wide, especially if the object is tall and heavy.
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