Clean 1-panel fiberglass entry door featuring six divided glass lites for a timeless, elegant look True Divided Lite (TDL): each glass pane is separate, framed within individual muntins for classic authenticity Durable, low-maintenance fiberglass construction resists warping, rot, and dents Insulated, beveled, tempered, Low-E glass standard; optional glass types include Flemish and Rain finishes Standard 36″×80″ slab