Bullet Resistant Door Door Type Level 3 Lock Type Mortise Material 16-gauge Steel 10-gauge Armor Hand LH Door Opening Height 80 in Door Opening Width 36 in Throat Opening Size 5-3/4 in Thickness 1-3/4 in Overall Depth 4-7/8 in Agency Compliance UL752 for Bullet Resistence Includes Hinge Cutout for 5 in .180 Thick