ABH A240HD/A240LL Aluminum Con...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$135.00
$126.47
ABH A240HD/A240LL Aluminum Continuous Gear Hinges Full Mortise Heavy Duty BHMA Grade 1

ABH A240HD/A240LL Aluminum Continuous Gear Hinges Full Mortise Heavy Duty BHMA Grade 1

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Model: A240HD C79
$135.00
$126.47
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$135.00
$126.47
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ABH A240HD/A240LL Aluminum Continuous Gear Hinges Full Mortise Heavy Duty BHMA Grade 1

Professional Heavy-Duty Continuous Hinge Solution

The ABH A240HD/A240LL Aluminum Continuous Gear Hinges deliver professional-grade performance for commercial door applications requiring maximum durability and security. Designed for 1-3/4" thick doors with 48" maximum door width, these BHMA Grade 1 certified hinges support up to 450 lbs door weight (1,000 lbs for LL model). The full mortise design features 3/32" door inset with EFCO® hole pattern and includes door edge protection lip for enhanced durability.

Professional Features & Benefits

  • Heavy-Duty Weight Capacity: Supports up to 450 lbs door weight (standard A240HD) or 1,000 lbs for lead-lined doors (A240LL model) for demanding commercial applications.
  • Door Compatibility: Designed for 1-3/4" thick doors with 48" maximum door width and 3/32" door inset configuration.
  • BHMA Grade 1 Certification: Meets BHMA 156.25 Grade 1 standards for commercial-grade reliability and performance.
  • Fire Rating Compliance: Approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes.
  • Enhanced Security Design: Continuous construction eliminates gaps between door and frame, preventing prying attempts while distributing weight evenly.
  • Surface Applied Installation: No mortising of door or frame required, and will cover old butt hinge cut-outs for retrofit applications.
  • Professional Construction: Aluminum construction with anodized finish applied after machining for superior durability and corrosion resistance.
  • Standard Length Options: Available in 79", 83", 85", 95" and 120" lengths with templated hole patterns for consistent installation.

Technical Specifications

  • BAA Qualified: Yes
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Weight: 450
  • Fasteners: 12-24 X 3/4" undercut self drilling, thread forming tek machine screws
  • Hinge Type: Full Mortise
  • Keyed: N/A
  • Keyed Function: N/A
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: A240HD / A240LL
  • Product Subgroup: Continuous Hinges
  • Product Type: Continuous Hinges
  • Series: A240 Series
  • Subcategory: Full Mortise Hinges

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Industrial and Warehouse Facilities
  • Fire-Rated Door Applications
  • High-Security Commercial Entrances
  • Heavy-Duty Door Retrofit Projects

Why Choose ABH Quality?

ABH A240HD/A240LL Continuous Gear Hinges deliver professional-grade reliability with aluminum construction and anodized finish rated for up to 450 lbs (1,000 lbs for LL model) door weight capacity. BHMA Grade 1 certification and fire rating approvals ensure compliance with commercial building requirements. Engineered for demanding commercial applications where dependable performance and enhanced security are essential.

Product Specs

Product Group:
Door Hinges and Pivots
Door Weight:
450
Fasteners:
12-24 X 3/4" undercut self drilling, thread forming tek machine screws
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Subcategory:
Full Mortise Hinges
Commercial/Residential:
Commercial
Hinge Type:
Full Mortise
Keyed:
N/A
Keyed Function:
N/A
Series:
A240 Series
BAA Qualified:
Yes
Product Model:
A240HD / A240LL
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

ABH A240HD C79 – Frequently Asked Questions

1) How much door weight can an ABH A240 geared hinge carry?
450 lbs on the standard A240HD. The lead-lined version, A240LL, is rated to 1,000 lbs, which is what you need for X-ray and imaging room doors where the lead core pushes the leaf weight far past a normal door. Both are the same full mortise geared hinge; the LL is the one to order when the door is lead-lined.
2) Can I use the ABH A240 hinge on a fire rated door?
Yes, within limits. The A240 gear hinge is approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. So a 90 minute hollow metal opening is covered; a wood door carrying a 90 minute label is not, and you would need a different hinge for that.
3) Will an ABH A240 continuous hinge cover the old butt hinge cutouts when I retrofit a door?
That is one of the reasons to use it. The A240 hinge runs the full height of the door and covers the existing butt hinge cutouts in the door and frame, so you are not filling and repainting mortises on a retrofit. It also does away with the gap between door and frame at the hinge edge, which removes the pry point on a security opening.
4) Is the ABH A240 a Grade 1 hinge, and does it qualify for a federal job?
BHMA 156.25 Grade 1, and it is BAA qualified, so it clears Buy American Act requirements on federally funded work. That combination is what a government or institutional spec usually calls for on a continuous hinge.
5) I have a 1-3/8 inch door, can I still use a continuous geared hinge?
Not the A240. It is built for 1-3/4 inch doors and putting it on a 1-3/8 inch leaf leaves the gear geometry wrong. For a 1-3/8 inch door, the Pemko short leaf flush continuous geared hinge is made for that thickness and is Grade 1. Check the door thickness before you order length and finish, because it is the one dimension that rules the A240 out outright.
6) Do I need a different continuous hinge for a lead-lined X-ray room door?
Order the A240LL rather than the A240HD. Same full mortise geared hinge and same 3/32 inch inset, but the LL is rated to 1,000 lbs against the standard model's 450 lbs, which is what a lead core door actually weighs. It is ordered on the lead-lined option and comes in the same 79, 83, 85, 95 and 120 inch lengths and all three finishes.
7) What is the closest full mortise heavy duty continuous geared hinge to the ABH A240HD from another manufacturer?
The Design Hardware FMHD is the nearest match in configuration and duty: it is a full mortise heavy duty continuous geared hinge, the same mounting family and duty level as the A240HD, which is a full mortise heavy duty hinge for 1-3/4 inch doors with a 3/32 inch door inset. Pemko's FM-RG Series is another full mortise Grade 1 aluminum continuous geared hinge, with a raised gear profile and 180 degree swing, and the A240HD carries BHMA 156.25 Grade 1 as well. Pemko's 84 inch CFM84SLF-HD1 is a Grade 1 full mortise short leaf flush heavy duty hinge if the short leaf flush profile is what the opening was built for.
8) The frame will not accept a mortised hinge. What continuous geared hinge should be used instead of a full mortise A240HD?
Use a surface mounted continuous geared hinge. The A240HD is a full mortise hinge, which sets into the door and frame edge. Surface alternatives at the same heavy duty level include the Design Hardware FSHD full surface, the Design Hardware FSOHD full surface offset for openings where the door must clear a projecting frame or wall, and the BEST 664HD full surface continuous geared hinge, which carries a 90 minute UL fire rating. The NGP HD5700 is a full surface geared hinge built to a 1/16 inch door inset for 1-3/4 inch to 2-1/4 inch doors, and the NGP HD5400A is a half surface hinge if only the frame leaf can be surface applied.
9) What continuous hinge is used on a lead lined door if the standard heavy duty model will not carry the weight?
The A240LL is the lead lined version of the A240 Series, rated to 1,000 lbs door weight against 450 lbs for the standard A240HD, and it is ordered by selecting the lead lined option in 79, 83, 85, 95 and 120 inch lengths in Black, Clear Anodized Aluminum or Dark Bronze. Among the other heavy duty continuous geared hinges, the Design Hardware FMHD, BEST 663HD, BEST 664HD and Pemko CFM84SLF-HD1 are all heavy duty models, but the lead lined weight rating is specific to the A240LL.
10) Can a BEST 641 or 651 continuous hinge be substituted for an ABH A240HD?
They are a different duty class. The BEST 641 is a steel full mortise standard duty continuous hinge with hospital tips and the BEST 651 is a stainless steel full mortise continuous hinge with hospital tips, both listed at medium duty. The A240HD is a heavy duty full mortise aluminum geared hinge supporting up to 450 lbs door weight and certified to BHMA 156.25 Grade 1. For a traffic level or door weight specified around the A240HD, stay with a heavy duty model such as the Design Hardware FMHD or the BEST 663HD; the 641 and 651 suit medium duty openings and bring the hospital tip end detail.
11) Which continuous geared hinge meets a Grade 1 spec on the drawing?
The ABH A240HD/A240LL is certified to BHMA 156.25 Grade 1. Among the other continuous geared hinges, the Pemko FM-RG Series, Pemko CFM84SLF-HD1, Pemko FM-SLF and Pemko DSH1000 are Grade 1. The NGP HD1100A is a Grade 3 concealed hinge, so it will not satisfy a Grade 1 line item even though it is 10C fire rated for 90 minutes on hollow metal.
12) The door is 1-3/8 inch thick. What continuous geared hinge fits instead of the ABH A240?
The Pemko FM-SLF short leaf flush continuous geared hinge is built for 1-3/8 inch doors and is Grade 1 construction. The ABH A240HD/A240LL is designed for 1-3/4 inch thick doors, so a thinner door calls for a hinge sized to it rather than the A240.
13) Do I need to order screws with the ABH A240 hinge, or does it come with fasteners?
Fasteners come with it: 12-24 x 3/4 inch undercut self drilling, thread forming tek machine screws. They are self drilling into hollow metal, so on a steel frame and door you are not pre-tapping. The hole pattern is templated across the standard lengths, and the leaf carries a door edge protection lip.
14) Full mortise or full surface continuous hinge, which one do I need?
The A240 is a full mortise hinge: it sits between the door edge and the frame rabbet on a 3/32 inch inset door, and both leaves are hidden when the door is closed. Pick it when the door and frame are square edged and in reasonable condition. If the frame is beaten up, out of square, or you cannot get at the hinge rabbet, a full surface hinge mounts on the face of both instead. ZenSupply carries full surface geared hinges from Design Hardware, the FSHD, and the offset FSOHD for wrapped or non-standard frame conditions.
15) Does the ABH A240 continuous hinge need to be handed?
No handing to specify on the A240. A continuous geared hinge is symmetrical along its length and mounts on whichever hinge edge the door swings from, so left hand and right hand openings take the same part. What you do have to get right is length, finish, the 1-3/4 inch door thickness, and whether the door is lead-lined.
16) Can I standardize on one continuous hinge across a school or hospital with mixed door weights?
For most openings the A240HD at 450 lbs covers standard commercial doors up to 48 inches wide, and the A240LL handles the heavy imaging room doors, so you can stay on one series and one finish across the building and only change the model where the door is lead-lined. Both are BHMA 156.25 Grade 1 and both take the same 12-24 x 3/4 inch tek screws, so your stock room carries one fastener.
17) Is a concealed continuous geared hinge an alternative to the ABH A240HD full mortise hinge?
They mount differently. The NGP HD1100A is a concealed continuous geared hinge, 83 inches, described as heavy duty and 10C fire rated 90 minutes on hollow metal, but it is a Grade 3 hinge. The A240HD is a full mortise geared hinge certified to BHMA 156.25 Grade 1 with a door edge protection lip, approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. A concealed hinge hides the barrel when the door is closed; the A240HD leaf is visible along the hinge edge and covers old butt hinge cut-outs on a retrofit.
18) Which continuous geared hinge should be used on a 90 minute fire rated hollow metal opening?
The ABH A240HD/A240LL is approved for metal swinging fire doors up to 90 minutes and wood swinging fire doors up to 60 minutes. The BEST 663HD is 90 minute UL fire rated for 3/32 inch inset doors and the BEST 664HD is 90 minute UL fire rated in a full surface configuration. The NGP HD5400A, NGP HD5700 and NGP HD1100A are 10C fire rated 90 minute on hollow metal. The mounting configuration is what separates them: the A240 and 663HD mortise into the opening, the 664HD and HD5700 apply to the surface, and the HD5400A is half surface.
19) What continuous hinge should be specified for a behavioral health opening where the door must clear a barricade?
The Pemko DSH1000 is an anti-barricade continuous hinge with 100 degree bidirectional operation and Grade 1 construction, which lets the door swing either way to clear an obstructed room. The ABH A240HD/A240LL is a conventional full mortise geared hinge with a door edge protection lip, BHMA 156.25 Grade 1, supporting up to 450 lbs and 1,000 lbs on the lead lined model; it does not provide bidirectional swing.
20) Which continuous hinge should be used for a stainless steel or hospital tip requirement rather than the aluminum ABH A240?
The BEST 651 is a stainless steel full mortise continuous hinge with hospital tips, and the BEST 641 is the steel full mortise version with hospital tips; both are medium duty. The ABH A240HD/A240LL is aluminum with an anodized finish applied after machining, offered in Black, Clear Anodized Aluminum and Dark Bronze. Where a facility standard calls for stainless material or the sloped hospital tip end cap, the 651 answers that; where it calls for BHMA 156.25 Grade 1 heavy duty capacity to 450 lbs, the A240HD does.
21) Which heavy duty continuous geared hinges come in a length that fits an 84 inch door opening?
The ABH A240HD/A240LL is stocked in 79, 83, 85, 95 and 120 inch lengths with templated hole patterns, so an 84 inch opening is typically covered by the 83 inch hinge. The Pemko CFM84SLF-HD1 is an 84 inch Grade 1 full mortise short leaf flush heavy duty hinge. The NGP HD1100A and NGP HD5400A are 83 inch hinges, as is the NGP HD5700.
22) How do I cross reference an ABH A240 continuous geared hinge to another manufacturer's part number?
ABH publishes an Aluminum Continuous Geared Hinge Cross Reference Chart, and the A240HD cut sheet and door clearance chart give the mounting and clearance dimensions to check a candidate against. Working from configuration, the full mortise peers are the Design Hardware FMHD, Pemko FM-RG Series, Pemko CFM84SLF-HD1 and Pemko FM-SLF; the surface peers are Design Hardware FSHD, Design Hardware FSOHD, BEST 664HD and NGP HD5700; NGP HD5400A is half surface and NGP HD1100A is concealed. Match mounting type, door thickness and inset first, then grade and fire rating.
23) What finishes does the ABH A240 gear hinge come in, and will it match my existing storefront?
Three finishes: clear anodized aluminum, dark bronze and black. The anodizing is applied after machining, so cut ends and screw holes are finished rather than raw. Clear anodized and dark bronze are the two that typically line up with aluminum storefront and entrance framing, which is where most of these go on a glass front opening.
24) Does a Buy American requirement rule out any of the continuous geared hinge options?
The ABH A240HD/A240LL is BAA qualified, which is the field a federal or federally funded job will be checked against. It is a commercial grade full mortise aluminum geared hinge certified to BHMA 156.25 Grade 1 and offered in 79, 83, 85, 95 and 120 inch lengths, so a BAA line item can be met without stepping down in duty level.
How fast can I get the ABH A240HD C79 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 ABH A240HD C79 come with a warranty?
Absolutely. The ABH A240HD C79 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 ABH A240HD C79?
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 ABH A240HD C79 from ZenSupply?
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