Tri-Arc KDEC109246 9-Step Forward Descent Safety Angle Steel Rolling Industrial and Warehouse Ladder with Perforated Tread, 24-Inch Wide Steps

I believe these stairs hold much much more than 450# OSHA rating. I phoned their company "Tri Arc", regarding the OSHA 450# weight rating. They said that rating is on all lengths in this kind of steel staircases made with this particular steel. Note, this is not the high carbon steel on other stairs they make. Those are more expensive but have much higher weight weightings. I believe those are rated at 1,000#. But regarding the steel in the stairs I bought, I noticed the OSHA weight rating doesn't differ between the various lengths of the product and the number of stairs. I mean a staircase with 2 stairs does not span the same distance so, in theory, should hold more weight without bending. And Tri-Arc stated the OSHA rating is not on each step but the overall product. So length and OSHA rating don't vary which further leads me to believe the OSHA rating is "low balled". I personally believe it is just a rating that industrial companies are looking for when they order stairs to meet OSHA standards. I mean seriously you can't tell me that during the course of a day they don't have several workers going up the stairs in groups far exceeding this 450# weight. They'd have to have rules that would not permit that and I'm pretty sure they don't. If they do they sure don't have time to monitor something like that. So common sense tells me that weight capacity of these stairs obviously exceed that 450# limit. And I noticed the stairs vs same length "rolling ladder" frames also had the same OSHA rating. The rolling ladder basically consists of same staircase but is bolted to the portable frame with wheels. I had assumed the frame that the rolling ladder was connected to would add to its strength. But I am not sure as OSHA doesn't distinguish. Bottom line is that the person I talked to at Tri-Arc stated they were not allowed say much more without risking overstating. But they DID say they have internal tests far above the OSHA ratings. I highly suggested they get their products independently tested for actual strengths. They do themselves a great disservice by not doing that. I just know from my use it's well above 450#. I could easily put at least four 200# people on the staircase with no concerns. Note, in the photo, I went even further and added additional bracing to the connection between the stairs and rolling ladder frame. But that was simply because I plan to put even much more weight upon them. I am trying to take advantage of space available in my heavy trussed/framed garage attic and have big men in my family carrying a lot of weight up and down. I had originally planned on building a wood set of stairs but this was much more cost effective. There was no way I was going to pay $5,000 to get a product that won't hold this amount and I sure as heck wasn't going to buy a flimsy ladder. I researched for hours and hours and this was the most rugged product for the money. Down the road I MIGHT remove the rolling ladder frame and use a winch to swing the stairs up out of the way when not in use. I STILL think it would hold about the same amount of weight given the way this is made. Note also, I placed shelf on the bottom and have placed tubs there to utilize the space under the ladder and I am still able to roll it. The overall product weighs only 400# (including portable frame) which is pretty amazing for the weight it supports. One would think it would be much heavier. Welds are incredible. Slope is around 50 degrees and treads are deep which means I can even walk down them facing forward. Note I have not put the handrails on but will be doing so in the near future. But I HAVE used this a lot already and this thing is an absolute beast!.

Rugged and Easy to Assemble. The 4 Step 24in wide version can be maneuvered through most doors by one person. These rolling stairs are much easier for an old fat person like me to climb than a step ladder. When you step on the first step the stairway is locked and the wheels no longer roll.

We purchased this for our local food bank and it is very useful and we feel much safer using it as opposed to other ladders and steps.

Able to set up alone. Great value, and can use for multiple applications. In garage to get to loft, or to a car on the lift.

Ordered in August 2023. Finally arrived after several calls to customer service in February 2024. Missing several bolts, but they were easy to buy at the local store. Over all, I'm satisfied with the product, but not Amazon service.

Assembly was simple and intuitive. The stair meets all expectations.

I built a loft for storage in my shop and was preparing to build stairs to access it. I came across this set of movable stairs and pulled the trigger hoping for the best. Really pleased with the quality , assembly and easy of making customizations for my needs. The top bar was too high to move around without bumping into crossmembers so just cut it down and works perfectly. I also left off the rail on one side making it far easier to access shelves and second floor. Very sturdy.

As the picture shows, I’m using it to change tall light bulbs in my hangar. The only negative was there weren’t enough bolts/nuts/washers. had to implement with other hardware I had saved over many years. Hardware provided was short by 3 bolts/nuts/washers. Ladder has to be assembled on its side. Raising it upright is not easy; takes at least two people.