Harmony Frosted Glass Square Corner Markerboards are eco-friendly - 100% recyclable and made from recycled glass and sand. Unframed boards feature 1 square corners square standoffs and flat polished edges. Tempered glass ¼” thick provides a non-porous surface that will not ghost or stain and works with standard dry erase markers. With the rear face frosted for a transclucent appearance marker visibility is best when mounted on light to medium colored walls. Four or six pre-drilled mounting holes are inset into the glass and 1” diameter round satin aluminum standoff hangers create a 1¼” spacing between the wall and glass. The board features a clear acrylic rear-mounted accessory holder complete with markers and eraser. Made in the USA. Features: Tempered 1/4 thick recycled colored glass with pre-drilled mounting holes Non-porous surface will not stain and works with standard dry erase markers. 1 diameter satin aluminum standoff hangers create 1-1/4 spacing between the wall and glass marker board Made from Glass Features a unique clear acrylic rear-mounted accessory holder that comes complete with 4 markers and 1 eraser For best marker visibility mount on light to medium colored walls. Specifications: Assembly Required: No Product Dimensions: 48 H x 72 W x 1.63 D Product Color: Frosted Black