This premium Therma-Tru Fiber-Classic 36" x 80" prehung exterior door features a large half-lite clear glass upper panel that floods your entryway with natural light, paired with two raised lower panels for classic curb appeal. The insulated fiberglass core resists warping, cracking, rotting, and rusting while delivering excellent energy performance — U-Factor: 0.26, Solar Heat Gain Coefficient: 0.15, Visible Transmittance: 0.14, Air Leakage ≤ 0.3. NFRC certified. Arrives pre-hung with composite or wood jambs included and pre-bored for knob and deadbolt. Finished in white. Never installed.