The Series 3000 (2″ x 4-1/2″) Thermal MultiPlane from Republic extends the versatility of standard storefront systems by offering improved thermal performance and multiple glass plane options. Recently enhanced, Series 3000 Thermal MultiPlane now provides more options for head and sill anchorage, improved structural silicone glazing, and a new front set installation option utilizing continuous head and sill members. Designed for 1″ infill, Series 3000 Thermal MultiPlane has available glazing adaptors and gasket options for infills ranging from 1/4″ to 1-1/8″.