Optional Sit-to-Stand attachment to enable easier transfers, increase the function of the table for unique treatments and provide additional support. Attachment is exclusive to Tri W-G products. The Sit-to-Stand attachment has a maximum static load of 500 lbs. The above the table height though is adjustable. This is an accessory for TG1800 and TG1900 series tables from Tri W-G. The purchase only includes the Sit-to-Stand and not the table. Installation is easy and can be done on-site after purchase.