Product Overview
NGP HD4100/HD4100-LL Heavy Duty Concealed Swing-Clear Continuous Geared Hinge, 1/16" Door Inset for 1-3/4" Doors
Continuous geared aluminum hinges run the full height of the door evenly distributing the weight of the door along the full height of the frame. Ideal for high-frequency and heavy-weight doors in new construction and retrofit applications.
- 1/16" Door Inset for 1-3/4" thick doors
- Aluminum alloy 6063-T6; Anodized after machining
- Specially designed involute intermeshing gears
- Proprietary Teflon infused self-lubricating wear-resistant bearings
- No hinge reinforcement is necessary except on extremely heavy, extremely high-frequency or extra-wide doors
- Lifetime of the door opening warranty
- #12-24 TEK MS
- “LL” model for doors up to 1,000 lbs. features lead-lined dual row hole pattern
- Standard lengths: 83", 85", *95"
- Note: For door sizing refer to installation instructions
*Oversize handling fee applies (added at checkout)

| Brand | |
|---|---|
| Length |
83" (for 7'0" door), 85" (for 7'2" Door), 95" (for 8'0" door) |
| Material |
Aluminum alloy 6063-T6; Anodized after machining |
| ANSI/BHMA Standard |
ANSI/BHMA Certified to A156.26 American National Standard for Continuous Hinges: Grade 1 - 150 lb. Door, Grade 1 - 600 lb. Door |
| Fire-Rating |
Fire-rated 90-minute on hollow metal (except steel stiffened) or wood door leafs up to 4'0" x 8'0" and steel stiffened doors up to 4'0" x 7'2" |
| Continuous Hinge Type |
Full Mortise (Concealed), Swing Clear |
| Usage |
Heavy Duty |
| Buy American Act Compliance |
Meets Buy American Act - Made in USA |