This troubleshooting method applies to all TOPSKY series folding plastic file cabinets
Amazon.com page: www.amazon.com/dp/B0D7CD25F2
www.amazon.com/dp/B0D7CC8V76
If any questions, please kindly contact us.
Email: service@topskyfurniture.com
Phone number: +1 725-333-1988
Our Home Page Shop: www.topskyfurniture.com