Can heated shelves be added to existing Metro shelving units?

Heated Shelves are available in 18 different sizes and are compatible with all Metro Super Erecta SiteSelect posts. Shelves can be adjusted in 1” (25mm) increments. Please note that the minimum clearance from bottom of shelf to combustible surfaces is 1.5” (38mm). Recommended minimum spacing between shelves is 5.73” (146mm).