What is the weight capacity of this heavy-duty stool?

This stool has been tested to support a static load capacity of 500 lbs.

What is the seat height range of the NPS 6230HB 6200 Series stool?

The seat height of the NPS 6230HB 6200 Series stool is adjustable from 32 inches to 39 inches.

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NPS 6230HB 6200 Series Height Adjustable Heavy Duty Steel Stool With Backrest - 32" to 39" Seat Height - Brown Seat - Gray Back/Base

Sturdy 0.88" outer diameter 18-gauge steel tubing.
Seat is a full 14" diameter with 11.5" diameter Masonite board that is recessed into the pan with eight rivets and will not chip or crack.
Foot rings with 0.63" outer diameter are welded to each leg by four contact points for added rigidity.
Features backrest that adjusts up/down and forward/back.
Features height adjustable legs.
Tested by Bureau Veritas to support 500 lbs static load capacity.