Single Entry Starter Unit. 85-1/4" height with 6-8 tiers. Configurable design allows for adding on units horizontally. Simple installation. Durable cold-rolled steel with a 3/4" flange on sides. Available Options. Media Type: Letter or Legal. Unit Width: 24", 30", 36", 42" or 48". Openings: 6, 7 or 8 Tiers . The uniquely customizable Datum 4Post™ filing system offers maximum efficiency and flexibility, with customization and expansion options to handle the medical filing needs of virtually any medical facility. Configurable and Versatile: The versatile 4 Post™ provides organized storage of items of any size or weight while keeping them easily accessible. Its configurable modular design allows you to "grow as you go" - begin with the Starter unit, then select Add-On units to accommodate your facility's storage requirements as needed. This flexible shelving system is easy to install and works well with TrakSlider and MobileTrak moving shelving systems. With pre-punched tops and single rivet bottom shelf supports, it easily attaches to these mobile systems without the need to drill additional holes. To see all SHELVING OPTION SPECIFICATIONS - Scroll down to end of overview. Durable: The shelves are made of 22 gauge cold-rolled steel with a 3/4" flange on all sides for additional support. The units are powder-coated for a durable, corrosion-resistant finish. Model: This model has a height of 85-1/4" and a capacity for 6-8 tiers. It is a Single Entry Starter Unit. Single Entry - there is access to the files on only one side of the unit, as opposed to both sides (Double Entry units are available for purchase separately). Starter Unit - it is designed to be a base unit that can be added onto at a later time with Add-On Units (purchased separately). The open "L" upright side post is typically used for row ends (for starter units), while Open "T" upright posts are used as a common upright between shelf units (add-on units). All uprights include a pair