Norton Rixson 7970 Series Multi-Sized Spring Overhead Concealed Door Closer with Security Features

Norton Rixson 7970 Series Multi-Sized Spring Overhead Concealed Door Closer with Security Features

Professional Security Door Closer for High-End Architectural Applications

The Norton Rixson 7970 Series Overhead Concealed Door Closer delivers professional-grade performance for high-security applications requiring both durability and aesthetic appeal. This Grade 1 certified closer accommodates doors from 1-3/4" to 2-1/4" thick with a maximum door weight capacity of 200 lbs. Built with an aluminum alloy shell and multi-sized spring 1-3 configuration, it provides tamper-resistant concealed operation ideal for detention facilities, psychiatric facilities, and other high-security locations.

Professional Features & Benefits

• Door Thickness Compatibility: Accommodates 1-3/4" to 2-1/4" thick doors for versatile installation options across various door types.
• Heavy-Duty Load Capacity: Supports up to 200 lbs maximum door weight for reliable operation with substantial commercial doors.
• Security-Enhanced Construction: Aluminum alloy shell with concealed design provides tamper resistance and vandalism protection for high-security environments.
• Multi-Point Hold Open Function: Fully adjustable multi-point hold open capability with shock-absorbing door stop for controlled door positioning.
• Universal Hinge Compatibility: Works with butt hinges, offset hinges, or center hung pivots for flexible installation configurations.
• Adjustable Operation Controls: Features adjustable sweep and latch speeds plus adjustable backcheck cushioning and positioning for customized door control.
• Grade 1 Certification: ANSI/BHMA A156.4 Grade 1 rating ensures commercial-grade reliability and performance standards.
• Manufacturer Warranty: 10-year limited warranty provides long-term protection and confidence in product durability.

Technical Specifications

• ADA Compliant: No
• ANSI/BHMA: ANSI/BHMA A156.4, Grade 1
• Commercial/Residential: Commercial
• Cover Type: Dress Cover Plate
• Delay Function: Yes
• Department: Door Hardware
• Door Swing: Single Acting
• Door Weight: 200 lbs.
• Duty Level: Heavy Duty
• Grade: Grade 1
• Hold Open Feature: No
• Product Category: Door Controls
• Product Group: Door Controls
• Product Subgroup: Door Closers - Overhead Concealed
• Product Type: Overhead Concealed Door Closers
• Series: 7970 Series
• Spring Type: Fixed Size
• Subcategory: Overhead Concealed Closers
• Traffic Rating: Moderate Traffic
• Warranty: 10 Year Limited

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/4" and 2-1/4", maximum weight of 200 lbs, and hinge compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door header and frame surfaces for concealed installation.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for overhead concealed mounting.
4. Install all mounting hardware and secure the closer assembly to door and frame per manufacturer torque specifications, ensuring proper concealment.
5. Adjust operational components including sweep speed, latch speed, backcheck cushioning, and multi-point hold open positions for proper door control throughout the full range of motion.
6. Test closer operation to verify proper function, shock absorption, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• High-Security Commercial Buildings
• Detention and Correctional Facilities
• Psychiatric and Healthcare Institutions
• Government and Municipal Buildings
• Educational Facilities Requiring Security
• High-End Architectural Commercial Projects
• Industrial Security Applications

Security Enhancement Features

The 7970 Series offers enhanced concealment and tamper resistance specifically designed for detention and psychiatric facilities. The special security model 7970(DPS) includes door position switch capability for remote door status monitoring. Optional delayed action and enhanced backcheck features provide additional security control options for specialized applications.

Why Choose Norton Rixson Quality?

Norton Rixson 7970 Series door closers deliver professional-grade reliability with aluminum alloy construction and Grade 1 ANSI/BHMA A156.4 certification for demanding commercial applications. The 10-year limited warranty demonstrates the manufacturer's confidence in long-term performance. Engineered specifically for high-security environments where concealed operation and tamper resistance are essential for maintaining both security and aesthetic requirements.