The Pemko FM_SLI-HD1 Full Mortise Hinges Short Leaf Inset is built for new door projects that need strength and smooth movement. Because it is made for hollow metal doors with SDI inset specs, it helps keep doors and frames in line. In addition, the full-length geared design spreads the door weight from top to bottom. As a result, the door moves with less stress and less wear over time.

Furthermore, the hinge hides both leaves inside the opening. Therefore, it adds safety while also giving a clean look. At the same time, the strong aluminum build supports heavy doors in busy areas. For this reason, it is a smart choice for schools, hospitals, and care centers.

Available Finish

Key Features

• Heavy and extra heavy duty models available
• Full mortise, concealed short leaf inset design
• Designed for hollow metal doors 1-3/4″ to 2-1/4″ thick
• Meets SDI specifications for proper door and frame alignment
• Continuous geared bearing with 3″ spacing for steady support
• Self-drilling Teks fasteners (#12-24 x 11/16” Flat Head Undercut, Type C) — no tapping required
• Conceals both leaves for added safety and security
• Custom lengths available from 79″ to 120″
• Optional hospital tip and fire pins
• Anodized after machining for a longer-lasting finish

Performance Benefits

• Ideal for areas where safety is important
• Distributes door weight evenly, which helps extend door life
• Prevents sagging and keeps doors aligned over time
• Bearing system reduces wear and ensures smooth movement
• Fire-rated and code compliant; therefore, suitable for regulated buildings
• Backed by a lifetime warranty against defects in material or workmanship

Specifications

• Model: FM_SLI-HD1
• Grade: ANSI/BHMA A156.26 Grade 1
• Type: Full Mortise Continuous Geared Hinge
• Material: Anodized Aluminum
• Strength: Heavy Weight
• Handing: Non-Handed
• Door Thickness: 1-3/4″ minimum – 2-1/4″ maximum
• Maximum Door Width: 4′
• Maximum Swing: 180°
• Minimum Hinge Clearance: 5/16″
• Weight: 1.14 lbs. per foot
• Length Range: 79″ – 120″
• Width (frame edge to door edge): 5/16″
• Cap Width: 25/32″
• Height (to flange/door edge side): 1-19/32″
• Height (frame edge flange to top of cap): 11/16″

Product Note: The door edge must be square on the hinge side. However, if the door has a beveled edge, extra clearance of 1/32″–1/16″ may be needed depending on door and frame conditions.

Certifications

• UL 10C – Positive Pressure Fire Tests of Door Assemblies
• ANSI/BHMA A156.26 Grade 1 (300 lb. doors)
• ANSI/BHMA A156.18
• Health Product Declaration (HPD)