Glynn-Johnson 450 Series - Med...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$151.00
$83.19
Glynn-Johnson Glynn-Johnson 450 Series - Medium Duty Surface Overhead Door Holders/Stops GLY-450

Glynn-Johnson 450 Series - Medium Duty Surface Overhead Door Holders/Stops

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Model: 451H-SP28
$151.00
$83.19
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$151.00
$83.19
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The 450 Series surface-mounted holders and stops offer the widest variety of functions, materials and finishes to fit all light- to medium-duty applications. The visible components are available in a wide variety of architectural finishes to complement any design. The 450 Series is designed for installation in virtually all types of doors and frames, including doors with conventional butt hinges, offset pivots, continuous hinges, swing clear hinges and many other specialty hinges. The provided templates allow for variable mounting positions, ranging from 85° - 110° of opening.

FEATURES & BENEFITS

  • Non-handed design for simple installation and stocking
  • Compatible with single-acting doors
  • Improved compatibility with door closers for better door control and less wear and tear on all of the door hardware
  • Available in brass and the 300 Series stainless steel or steel, to offer the broadest range of finishes in the industry to complement any design
  • Brass and stainless steel offer the highest resistance to corrosion for a longer lasting product in a variety of weather conditions
  • Other base materials are suitable for normal interior use

MODELS

  • 450H Series hold-open
  • 450S Series stop-only
  • 450F Series friction hold-open
  • 450SE Series special stop-only

Product Specs

Series:
450 Series
Duty Level:
Medium Duty
Product Group:
Door Controls
Product Subgroup:
Overhead Stops and Holders
Product Type:
Overhead Stops and Holders - Concealed Mount
Subcategory:
Stops and Holders
Commercial/Residential:
Commercial
Product Category:
Door Controls

Glynn-Johnson 451H-SP28 – Frequently Asked Questions

1) What are Glynn Johnson 450 Series door holders designed for?
The 450 Series provides medium-duty surface mounting for overhead doors. These holders stop doors at predetermined angles and release when pulled with moderate force. Ideal for commercial entrance doors, office buildings, and institutional applications.
2) What door weights and sizes work with the 450 Series?
These holders accommodate medium-duty commercial doors typically up to 200 pounds. Verify your specific door weight against manufacturer specifications. Door thickness and frame construction affect compatibility more than width alone.
3) How do I determine left hand versus right hand for the 450 Series?
Stand on the pull side of the door. If hinges are on your right, order right hand. If hinges are on your left, order left hand. The holder mounts on the hinge side of the frame and connects to the door face.
4) What finishes are available for Glynn Johnson 450 Series holders?
Standard finishes include aluminum, brass, bronze, and stainless steel options. Specific finish availability varies by model number. Choose finishes that coordinate with existing door hardware for consistent appearance.
5) What holding power does the 450 Series provide?
Medium-duty holders balance reliable holding with reasonable release force. They resist wind pressure and casual contact while allowing intentional door closing. Holding strength adjusts through installation positioning and arm tension.
6) Do these holders meet accessibility and fire code requirements?
Door holders must release automatically during fire alarm activation when connected to fire safety systems. Verify local code requirements for release force limits and accessibility compliance. Consult your fire marshal for specific installation requirements.
7) What components come with 450 Series door holders?
Complete units include the wall bracket, door bracket, connecting arm, and mounting hardware. Some models include adjustment mechanisms. Verify component lists for your specific model number before installation.
8) How do I install Glynn Johnson 450 Series holders?
Mount the wall bracket to the frame head or adjacent wall surface. Attach the door bracket to the door face. Connect with the articulating arm and adjust for desired hold-open angle. Use manufacturer templates for precise positioning.
9) Can I adjust the holding angle after installation?
Most 450 Series holders allow angle adjustment through repositioning the connecting arm or bracket adjustments. Some models include built-in angle stops. Make adjustments gradually and test door operation after each change.
10) What maintenance do these door holders require?
Periodically check mounting screws for tightness. Clean pivot points and lubricate moving parts annually. Inspect arms for wear or damage. Test release function regularly, especially on fire-rated installations with automatic release systems.
11) How does the 450 Series compare to other Glynn Johnson holders?
The 450 Series offers medium-duty capacity between light-duty and heavy-duty models. More robust than residential holders but less heavy than institutional-grade units. Browse Glynn Johnson options for different duty ratings.
12) What door and frame conditions affect 450 Series performance?
Solid wood or metal frames provide best mounting. Hollow metal doors need adequate reinforcement at bracket locations. High-traffic areas may require heavy-duty alternatives. Wind exposure affects holding requirements and release force needs.
How fast can I get the Glynn-Johnson 451H-SP28 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Glynn-Johnson 451H-SP28 come with a warranty?
Absolutely. The Glynn-Johnson 451H-SP28 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Glynn-Johnson 451H-SP28?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Glynn-Johnson 451H-SP28 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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