The MK80 coverless concealed hinge for wood or hollow metal doors with a 1-3/8" minimum thickness is non-handed. Product Overview Features For wood or hollow metal doors that are a minimum of 1-3/8" No covers 3-dimensional adjustability Zinc alloy base material 180° opening angle UL Listed Benefits Virtually disappear from view when the door is closed Provides aesthetic continuity when the door is open Refined and minimal Easy installation and door alteration 20-minute fire rating hollow metal, steel-covered composite, and wood core fire doors Greater hinge capacity than the MK4001A Inches Millimeters Gauge No. of Holes Fastener 4 3/8" x 1 1/8" 111.5 x 29 4 3/8 4 Metal: M5 x 20 screws, Wood: 35mm PHWS Specifications Handing: Non-handed Certifications UL Listed Number of Hinges Door Width 32" 36" 38" 42" 48" 2 185 lbs 176 lbs 164 lbs 143 lbs 132 lbs 3 211 lbs 198 lbs 184 lbs 160 lbs 149 lbs 4 233 lbs 220 lbs 197 lbs 171 lbs 158 lbs
