BH904
Description:
Single action spring hinges, for self closing single action doors.
Technical Details:
- Wooden or metal doors with wood or metal frames
- Door Dimensions: Refer our hinge selection chart to a certain suitability to various door dimensions
- Material: Stainless Steel
- Knuckles: 3
- Bearing: 2 Anti Friction Ball Bearing
- Finish: 630 ,626 (other finishes available upon request)
- Options: Flush tips only
Guidelines on use of Spring Hinges:
- Maximum doors size 3,0” x 7,0” x 914 ( ”4/3 1mm x 2134mm x 44mm)
- NFPA requires the use of 2 spring hinges on Fire Rated Doors
- Up to 70 lbs (32 kg) Door: 1 spring hinge with 2 ball bearing hinges. The spring hinge should be in the center location
- Up to 90 lbs (41 kg) Doors: 2 spring hinges with 1 ball bearing hinges. The 2 spring hinges should be in the center and bottom locations
- Up to 120 lbs (55 kg) Doors: 3 spring hinges
Please check the main Door Hinges page for How to Order instructions
H” |
W” |
Gauge of metal in mm |
Ball bearings |
4.5” |
4.5” |
3.4” |
2 Concealed AFBB |