The WWTOP60-ESC WorkWise™ Standing Desk Top provides an environmentally friendly work surface for your sit-stand desk. A spacious 60 x 30 inches with a thickness of 0.75 inches, the WWTOP60-ESC features mounting holes with threaded inserts that perfectly match Tripp Lite WorkWise Sit-Stand Electric Adjustable-Height Desk Bases, such as WWBASE-BK, WWBASE-GY and WWBASE-WH, for easy assembly. The contoured edge allows you easier access to desktop items. Made and finished in the USA, the MDF (medium-density fibreboard) WWTOP60-ESC is constructed entirely of recycled wood fibers with an espresso-colored low-emission powder-coated finish that qualifies for LEED credits. It's certified by the Sustainable Forestry Initiative and meets California Air Resources Board requirements.