[Black Hardware Prehung French Door Collection] 5-Lite Clear Glass White Solid Core Double Prehung French Door with Ready-to-Assemble JambSolid core Made of solid CARB P2 certified MDF, 70% more sound dampering than hollow core, energy efficient to lower heating and cooling costs. Upgraded glassis constructed from 4 mm tempered clear glass, this glass is both safe (SGCC certified) . Finishedpaint grade finished surface ready to use (no paint or stain required), paintable and stainable, the surface is harder than traditional primed and therefore anti scratch. Quick assemble jamb kitJamb