About this item
The LCN 3133-H is a concealed in-door door closer with a hold open track arm, sized for interior doors 34 to 38 inches wide. It's part of the LCN 3130 Series from Allegion, one of the most widely specified concealed closer families in commercial construction. The cylinder mounts inside the top rail of the door, the track mounts in the head frame, and nothing is visible from either side of the door when it's in use. This is the right choice for hospitals, schools, government buildings, multifamily corridors, and any interior application where an exposed closer arm is architecturally unacceptable.
What the -H Track Suffix Means and Why It Matters
The LCN 3130 Series ships with different track options depending on the application. The STD track is a standard slide track with no hold open capability. The H track — this model — is a hold open track that mechanically locks the door open at a preset angle and releases when the door is pushed back toward closed. The H-BUMPER track adds a physical door stop bumper to limit opening to 100 degrees. Knowing which suffix you need before ordering prevents the most common specification error on this product family.
Hold Open Track Operation
The H track on the LCN 3133-H allows the door to hold open at any adjustable point between 85 and 100 degrees. Maximum opening when templated is 140 degrees, trim permitting. The hold open is entirely mechanical, which means no electricity, no electromagnet, and no fire alarm interface is required. The door holds open at the set angle and releases when someone applies slight closing pressure. This is the appropriate configuration for high-traffic corridors where doors need to stay open during active periods without propping.
LCN 3130 Size Chart: Choosing Between 3131, 3132, and 3133
LCN 3130 Series cylinders are not adjustable for closing power, so sizing by door width is critical. The 3131 is Size 1 for interior doors up to 26 inches wide. The 3132 is Size 2 for doors up to approximately 30 inches wide. The 3133 is Size 3 for interior doors 34 to 38 inches wide, which covers the vast majority of standard commercial corridor openings. If your door falls outside the 34 to 38 inch range for the 3133-H, you need to specify a different size.
Installation Template
The LCN 3133-H ships with self-reaming and tapping screws, a wood and machine screw pack, the cast iron cylinder assembly with mounting plate, the hold open arm, the track roller, and the hold open track. The official LCN installation template for the 3130 Series is available through Allegion's technical documentation and specifies the exact mortise dimensions required in the door top rail. The template search query "lcn 3133 template" is one of the most common ways buyers find this product, and installing without the correct template dimensions is the primary cause of misaligned cylinder and track assemblies.
Construction
The cylinder body is cast iron with a full complement bearing. The piston is 1-1/8 inches in diameter. The pinion journal is a 1/2-inch diameter double heat-treated design for long-term durability under repeated daily cycling. The single-lever arm is concealed forged steel. The track uses a low-friction roller assembly that provides smooth door control across the full closing sweep. The door closer is handed at the factory for right-hand or left-hand swinging doors.
Certifications and Compliance
Grade: ANSI A156.4 Grade 1
Fire Rating: UL 10C (positive pressure fire door rated)
ADA: Meets reduced opening force requirements for accessible doors
Corrosion: 100-hour salt spray tested
BAA: Meets Buy American Act requirements for government and institutional projects
Specifications
Model: LCN 3133-H
Series: LCN 3130 Series Concealed Closer
Size: 3 (for interior doors 34" to 38" wide)
Track Type: H, Hold Open Track
Hold Open Range: Adjustable 85° to 100°
Maximum Opening: 140° when templated, trim permitting
Mounting: Concealed in door, cylinder in top rail, track in head frame
Arm: Concealed forged steel single-lever arm with low-friction roller
Cylinder Body: Cast iron
Piston Diameter: 1-1/8"
Pinion: 1/2" diameter double heat-treated
Door Thickness: Designed for 1-3/4" interior doors
Handing: Available right hand (RH) or left hand (LH)
Finishes: 622 Matte Black, 689 Aluminum, 690 Statuary Bronze, 691 Light Bronze, 693 Gloss Black, 695 Dark Bronze, 696 Brass
Includes: Cylinder assembly with mounting plate, hold open arm, track roller, hold open track, self-reaming and tapping screws, wood and machine screw pack
Grade: ANSI A156.4 Grade 1
UL: UL 10C fire rated
ADA: Compliant
BAA: Qualified
American Locksets has stocked LCN door closers since 2001.
Trusted Since 2001
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