Product Overview
Trudoor SPH Full Mortise Steel 3 Knuckle Spring Hinge, Square Corner, 4-1/2" x 4-1/2", UL Listed
- For automatic closing of fire doors
- Affordable alternative to a door closer
- Packed with wood and metal screws
- Meets ANSI A156.17 Grade 1 Self-closing hinges
- Meets NFPA80 standard for 3 Hour Fire Doors
Adjustability
- Spring tension can be adjusted with a hex wrench or tension rod (both are provided)
- Spring tension is held by tension pin inserted into tension pinhole
Labeled Door Sizes
- Maximum labeled door size (As set forth by NFPA80) 3′-0″ wide x 7′-0″ tall x 1-3/4″ thick

Cross Reference
SPH hinges can be specified as a substitute or direct replacement for: Best/Stanley 2060R, Bommer 4310, Cal-Royal NEWSH-140, Doormerica DHSP179, Ecco ECBB1105, Hager 1250, Ives 3SP1, Mac Pro MPS60, McKinney 1502, PBB SP81, PDQ 35STSH
| Brand | |
|---|---|
| Finishes |
652 Satin Chrome, BLK Black |
| Size |
4.5" x 4.5" |
| Usage |
Medium Duty |
| ANSI/BHMA Standard |
Meets ANSI/BHMA A156.7 |
| Material |
Steel (ANSI K81071F) |
| Gauge |
0 .134 |
| Corners |
Square |
| Swaging |
1/16″ Swage standard which provides 1/16″ of clearance between leaves |
| Fire-Rating |
UL listed for use with fire rated doors |
| Warranty |
Limited Lifetime Warranty |