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4-1/2 Half Surface Spring Hinge, Pair, Bommer LB4313C-045
 
   
Item No:  BOM-LB4313C-045
List Price:  $150.64
Your Price:  $90.38

Bommer LB4313C-045, 4-1/2" Half Surface Spring Hinge

Half Surface spring hinge. Door flange is surface applied to door. Jamb flange is mortised to door jamb. Packaged complete with a Pair (2) Single Action Spring Door Hinges, Tension Adjusting Tool, Locking Pins plus #12 x 1-1/4" Wood Screws and 1/4"-20 x 2" machine screws with nuts. Utilizes ANSI template screw hole pattern for use with wood or metal doors.

Bommer spring hinges are UL Listed for fire door applications, certified Grade 1 (highest grade) for 1 million cycles and made in the USA. Pivot point aligns with residential butt hinges gage .123 to .134

The included Tension Tool is use to adjust spring tension. The Locking Pins hold the Spring in tension after it is set. These adjustable tension spring hinges allow you to determine how much closing force you apply to the door (how hard/fast the door self closes).

Bommer made in the USA

Specifications for Bommer LB4313C-045 Spring Hinge:

  • Hinge Material: Steel
  • Height: 4-1/2"
  • Width: 4-1/4"
  • Corners: Square Corners
  • Gauge of Metal: .134 (Heavy Duty)
  • Number of Holes: 8
  • Standard Template Hole Pattern
  • Wood Screws: #12 x 1-1/4"
  • Machine Screws: 1/4"-20 x 2"
  • Self Lubricating Bearings
  • Adjustable Spring Torque
  • Non-Handed
  • UL Listed for fire door applications.
  • BHMA Certified Grade 1 for 1 million cycles.
  • Half Surface - ANSI K81081F
  • Door flange surface applied
  • Jamb flange mortise to jamb
  • Bommer LB4313C-045 Dimensions Diagram (PDF)

Sold as a pair (2 Hinges).

    
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  4-1/2 Inch Half Surface Spring Hinge

  4-1/2 Half Surface Spring Hinge, Pair, Bommer LB4313C-045
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