Guardian 2100.100 / LiftMaster 2100P Standard Gate Hinge

The Guardian 2100.100 / LiftMaster 2100P is a standard heavy-duty swing gate hinge for flat-mount gate and post installations. It is commonly used on heavy residential, commercial, and access-control swing gates where a strong weld surface, smooth movement, and dependable weight distribution are needed.
This hinge is prime coated and supplied for professional finishing after welding or installation. It is commonly sold in pairs and is rated for up to 1,000 lbs. per pair when installed on a suitable gate and post structure.
Key Features
- Rated 1,000 lbs. per pair
- Sold in pairs
- Flat mount design on both sides for gate and post attachment
- Heavy-duty construction for maximum durability
- Dependable roller bearing design
- Even weight distribution for smoother gate movement
- Five times the weight-bearing surface of the next comparable barrel hinge
- Large weld surface for strong attachment
- Easy to fully lubricate
- Prime-coated finish for preparation before final paint or sealing
- Limited lifetime warranty, when applicable through the manufacturer or seller terms
Compatible With
The Guardian 2100.100 / LiftMaster 2100P is not tied to one specific gate operator model. It is structural gate hardware used with many manual and automated swing gate installations. Compatibility depends on the gate frame, post type, required weight rating, mounting surface, welding method, and gate geometry.
- Heavy residential swing gates
- Commercial swing gates
- Access-control swing gate systems
- Manual swing gates requiring heavy-duty flat-mount hinges
- Automated swing gates using LiftMaster, Elite, Viking, FAAC, HySecurity, DoorKing, Apollo/Nice, or similar swing gate operators when the gate structure requires this hinge style
- Flat gate to flat post installations where both sides require flat mounting surfaces
For automated gates, the hinge should be selected based on the gate weight, gate width, post condition, swing geometry, and operator arm geometry. A properly aligned hinge helps reduce gate sag, friction, motor strain, and limit-related problems.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | Guardian / LiftMaster |
| Product Type | Standard Swing Gate Hinge |
| Part Number | Guardian 2100.100 / LiftMaster 2100P |
| Mounting Style | Flat mount, both sides |
| Finish | Prime coated |
| Application | Manual and automated swing gates |
| Rated Capacity | 1,000 lbs. per pair |
| Package Quantity | Commonly sold in pairs |
| Bearing Type | Roller bearing design |
| Installation Type | Professional weld-on / flat-mount installation |
| Notes | Verify gate weight, gate width, post structure, hinge spacing, and installation method before ordering. |
Also Known As / Related Part Numbers
- 2100P
- LiftMaster 2100P
- Guardian 2100.100
- Guardian 2100P
- Standard Hinge - Flat Mount, Both Sides
- Prime Coated Flat Mount Gate Hinge
- Heavy-Duty Roller Bearing Gate Hinge
Technician Note
This hinge must be matched to the gate weight, gate width, post condition, and mounting style. A heavy-duty hinge will not correct a weak post, twisted gate frame, poor weld, or improper operator geometry. On automated swing gates, poor hinge alignment can cause hard starts, motor strain, nuisance limit issues, and premature operator wear.
The prime-coated finish should be treated as a base finish. For outdoor use, especially in coastal or high-moisture areas, finish-paint or seal the hinge after installation to help reduce corrosion.
Before Ordering, Confirm
- The installation requires a flat-mount hinge on both sides.
- The gate and post surfaces are suitable for welding or the selected mounting method.
- The total gate weight is within the hinge rating.
- The gate width, wind load, and post condition are suitable for this hinge style.
- The hinge placement will work with the existing or planned swing gate operator.
- The finish will be painted or sealed after installation for long-term outdoor protection.
Professional Advisory
Gate hinges are load-bearing structural hardware. Welding, post repair, and heavy gate alignment should be handled by a qualified installer or fabricator. If the gate is sagging, binding, or out of square, correct the structural issue before installing a new gate operator or replacement hinge.
Questions & Answers
What is the Guardian 2100.100 / LiftMaster 2100P hinge used for?
The Guardian 2100.100 / LiftMaster 2100P is a heavy-duty standard swing gate hinge used for flat-mount gate and post installations on manual or automated swing gates.
Is the 2100P sold individually or as a pair?
The 2100P is commonly sold in pairs. Verify the package quantity on the product listing before ordering if you are matching an existing installation.
What gate weight is the 2100P hinge rated for?
The 2100P hinge set is rated for up to 1,000 pounds per pair when properly installed on a suitable gate and post structure.
Can the 2100P be used with automated swing gates?
Yes. The 2100P is commonly used on heavy-duty automated swing gates, but the gate structure, post condition, hinge alignment, and operator limits should be checked before installation.
Does the prime-coated finish mean the hinge is ready for permanent outdoor exposure?
The hinge is prime coated for preparation and initial protection, but it should be finish-painted or sealed after welding or installation for long-term outdoor corrosion resistance.