Designed to meet the needs of today's creative learning spaces, these Second Surface Shelf Kits add extra storage space to your Planner Studio Tables by Smith System. Great for large paper plans, tools, or any type of reference material. 5" high clearance between underside of top and shelf surface allows for the use of Smith System's 3" high storage totes.  - Planner Studio Table shelf that is 48" deep for tables that are 36" and 42" in width - 3/4" thick high pressure Gray laminate with matching 3mm edge banding - Steel support rails have Platinum finish - Distance between underside of top and shelf is 5" - Seating clearance will be limited with Second Shelf installed - 29" height tables not recommended with Second Shelf