Weight for 81-153 roller

A quick learner says:
September 14, 2011
On this item Tandem Sliding Glass Door Roller, 1-1/2" Concave part number 81-153 could you please let me know the weight?
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Mike from SWISCO responded:
September 28, 2011
The 81-153 Tandem Roller can support 250 lbs. of weight.
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