Pemko Markar FM3500 Series Hea...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,183.00
$1,176.91
Pemko Markar FM3500 Series Heavy-Duty Continuous Hinge 12 Gauge 304 Stainless Steel 900 lb Capacity

Pemko Markar FM3500 Series Heavy-Duty Continuous Hinge 12 Gauge 304 Stainless Steel 900 lb Capacity

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Model: FM-3500 6FT 8IN SS
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,183.00
$1,176.91
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Pemko Markar FM3500 Series Heavy-Duty Continuous Hinge 12 Gauge 304 Stainless Steel 900 lb Capacity

Extra-Heavy Duty Continuous Hinge for High-Security Applications

The Pemko Markar FM3500 Series represents professional-grade continuous hinge engineering designed for the most demanding applications. This 12 gauge full mortise continuous pin and barrel hinge features 304 stainless steel construction and supports weights up to 900 lbs with a maximum door width of 4'0";. Specifically engineered for 2"; thick swing-type doors in correctional facilities and high-security locations, this hinge accommodates door thickness from 1-3/4"; to 2-1/4"; with Grade 1 ANSI/BHMA certification.

Professional Features & Benefits

  • Heavy-Duty Load Capacity: Supports weights up to 900 lbs with 4'0"; maximum door width for demanding high-traffic applications.
  • Door Thickness Compatibility: Accommodates door thickness from 1-3/4"; to 2-1/4"; with full mortise mounting for secure installation.
  • Premium Construction: 304 stainless steel construction with 12 gauge thickness provides exceptional durability and corrosion resistance.
  • Grade 1 ANSI/BHMA Certification: Meets the highest industry standards for commercial door hardware performance and reliability.
  • Security-Focused Design: Fasteners are concealed when door is closed, with optional security stud available for enhanced tamper resistance.
  • Wide Swing Range: 180-Degree maximum swing with 5/16"; minimum hinge clearance for versatile door operation.
  • Complete Fastener Package: Includes Custom #12-24 x 7/16"; PFHMS U/C S.S. machine screws for secure mounting.
  • Flexible Configuration: Custom lengths and hole patterns available with symmetrically templated hole pattern for precise installation.

Technical Specifications

  • Department: Door Hardware
  • Grade: Grade 1
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: FM3500
  • Product Subgroup: Continuous Hinges
  • Product Substrate: Aluminum
  • Product Type: Continuous Hinges
  • Series: FM3500 Series
  • Subcategory: Continuous Hinges

Professional Applications

  • Correctional Facilities and Prison Doors
  • High-Security Government Buildings
  • Industrial Security Gates
  • Heavy-Duty Commercial Entrances
  • Institutional Healthcare Facilities
  • Military and Defense Installations
  • High-Traffic Public Buildings

Why Choose Pemko Quality?

Pemko Markar FM3500 Series continuous hinges deliver professional-grade reliability with 304 stainless steel construction rated to support up to 900 lbs. Grade 1 ANSI/BHMA certification along with multiple ASTM and UL certifications ensure compliance with the most stringent building codes and security requirements. Engineered for demanding high-security applications where dependable performance and tamper resistance are essential.

Product Specs

Subcategory:
Continuous Hinges
Grade:
Grade 1
Product Group:
Door Hinges and Pivots
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Product Model:
FM3500
Product Category:
Door Hinges and Pivots
Department:
Door Hardware
Product Substrate:
Aluminum
Series:
FM3500 Series

Pemko FM-3500 6FT 8IN SS – Frequently Asked Questions

1) Will the Pemko Markar FM3500 continuous hinge work on a 2 inch thick door?
Yes. The FM3500 covers door thickness from 1-3/4 to 2-1/4 inches, and the 2 inch swing-type door is exactly what it was engineered around. Standard 1-3/4 inch commercial doors sit at the bottom of that range and work as well. Anything thinner than 1-3/4 inches is out of range for this hinge.
2) Does the FM3500 hinge mortise into the door and frame, or surface mount?
Full mortise. Both leaves are let into the door edge and the frame rabbet, so the door and frame have to be prepped for it. If your existing openings are prepped for a surface applied hinge and you do not want to re-prep, look at a full surface unit instead, such as the Design Hardware FSHD or the BEST 664HD full surface geared hinge.
3) Can the fasteners on the FM3500 hinge be tampered with from outside a cell or secure room?
No. The fasteners are concealed when the door is closed, so there is nothing to attack with the door shut, and an optional security stud is available for added tamper resistance. That combination is why this hinge gets specified in correctional facilities, detention doors, and secure government work. Order includes custom #12-24 x 7/16 inch PFHMS undercut stainless machine screws.
4) Is the FM3500 hinge Grade 1?
Grade 1 under ANSI/BHMA, the top commercial tier for door hardware performance. For a facility standardizing on Grade 1 hardware across openings, the FM3500 qualifies. Worth noting when comparing continuous hinges: the NGP HD1100A concealed geared hinge is a Grade 3 product, so those two are not on the same performance tier despite both being described as heavy duty.
5) What is the closest equivalent to a Pemko Markar FM3500 continuous hinge if I need a full mortise heavy duty geared hinge instead of a pin and barrel type?
The FM3500 is a full mortise pin and barrel continuous hinge in 12 gauge 304 stainless steel, rated to 900 lbs on doors 1-3/4 in to 2-1/4 in thick. If the spec calls for a geared continuous hinge in the same full mortise prep, the Design Hardware FMHD is a full mortise heavy duty continuous geared hinge, and the ABH A120HD is a full mortise heavy duty aluminum continuous gear hinge. Both mortise into the door and frame edge the way the FM3500 does, so the door prep concept is the same; the load path differs because a geared hinge carries the door on an interlocking gear channel rather than a pin and barrel.
6) I need a 90 minute fire rated continuous hinge for a labeled opening. What are my options against the Pemko FM3500?
The FM3500 is a Grade 1 heavy duty continuous hinge built for correctional and high security openings. When the label on the opening drives the selection, the BEST 663HD is a heavy duty continuous hinge carrying a 90 minute UL fire rating for 3/32 in inset doors, and the BEST 664HD is a full surface heavy duty geared hinge with a 90 minute UL fire rating. On the NGP side, the HD1100A concealed geared hinge, the HD5400A half surface geared hinge and the HD5700 full surface geared hinge are each 10C fire rated 90 minute on hollow metal. Match the mounting style to the prep you already have before you match the rating.
7) The FM3500 needs a mortised door edge. What continuous hinge can I use on an existing opening I cannot mortise?
The Pemko Markar FM3500 is a full mortise hinge, so it requires machining the door and frame edge. On a retrofit where the existing door edge cannot be cut, surface applied continuous hinges mount to the face of the door and frame instead: the Design Hardware FSHD is a full surface heavy duty continuous geared hinge, the BEST 664HD is a full surface heavy duty continuous geared hinge, and the ABH A460HD is a half surface heavy duty aluminum continuous gear hinge. The NGP HD5700 is a full surface geared hinge sized for 1-3/4 in to 2-1/4 in doors, the same door thickness range the FM3500 covers.
8) I need a continuous hinge for a 10 ft tall door. Do the comparable geared hinges cover that height?
The Pemko Markar FM3500 is offered in 6 ft 8 in, 7 ft, 7 ft 2 in, 8 ft and 10 ft lengths, and custom lengths with custom hole patterns are available. Among the geared alternatives, the NGP HD1100A concealed, HD5400A half surface and HD5700 full surface hinges are each an 83 in length, which covers a standard 7 ft door but not a 10 ft leaf. For tall openings, stay with the FM3500 length range.
9) How far will a door on a Pemko FM3500 hinge swing open?
180 degrees maximum, with 5/16 inch minimum hinge clearance required. That clearance is the gap you need between the door edge and the frame for the barrel to work, so check it before ordering if you are retrofitting into an existing prep. The FM3500 is a standard swing hinge, not swing clear, so the door leaf still blocks part of the opening when open. For a clear opening on an accessible route, a swing clear unit such as the ABH A210HD is the type to look at.
10) What lengths does the Pemko Markar FM3500 hinge come in?
Five stock lengths, all in satin stainless steel: 6'8", 7'0", 7'2", 8'0", and 10'0". The 6'8" and 7'0" cover the two most common commercial door heights, and the 8' and 10' handle tall openings without stacking hinges. Custom lengths and hole patterns are available if none of the stock sizes match the frame.
11) Do I need to order screws separately for the Pemko FM3500 continuous hinge?
No, the fastener package ships with the hinge: custom #12-24 x 7/16 inch flat head undercut stainless steel machine screws. The hole pattern is symmetrically templated, so the hinge can be installed without laying out holes individually. Machine screws mean the frame and door need tapped holes, not wood screw pilots.
12) Will a Pemko FM3500 hinge hold up in a shower room, kitchen, or coastal building?
304 stainless steel is the reason it does. The FM3500 is 12 gauge 304 stainless throughout, which resists corrosion in wash-down, humid, and salt-air environments in a way an aluminum geared hinge does not. Most of the heavy duty continuous hinges in the same class, including the ABH A460HD and the NGP HD5400A, are aluminum alloy. If corrosion is the driver, stainless is the material to specify.
13) Can I get a Pemko FM3500 hinge cut to a length that is not a stock size?
Yes. Custom lengths and custom hole patterns are both available on the FM3500 beyond the five stock sizes (6'8", 7'0", 7'2", 8'0", 10'0"). That matters on retrofit work where an existing frame prep has to be matched rather than re-drilled, and on non-standard tall openings that fall between stock lengths.
14) What continuous hinge should I use instead of the Pemko FM3500 where finger safety on the hinge side is a requirement?
The FM3500 is built around security rather than pinch protection: its fasteners are concealed when the door is closed and an optional security stud is available for tamper resistance. Where the concern is the hinge side gap on a school, daycare or healthcare door, the ABH A135HD is a heavy duty aluminum continuous gear hinge with a safety design. Also worth noting for institutional work, the BEST 641 and BEST 651 full mortise continuous hinges are supplied with hospital tips.
15) My frame has an offset condition on the hinge side. Is there a continuous hinge that handles that where the FM3500 cannot?
The Pemko Markar FM3500 is a full mortise hinge and assumes the door and frame edges align for a mortised prep on doors 1-3/4 in to 2-1/4 in thick. For an offset hinge side condition, the Design Hardware FSOHD is a full surface offset heavy duty continuous geared hinge, which mounts to the faces and accounts for the offset rather than requiring an edge mortise. The Design Hardware FSHD full surface and FMHD full mortise models cover the non offset versions of the same heavy duty geared line.
16) Which continuous hinge keeps the hinge hardware hidden when the door is closed, the FM3500 or an NGP HD1100A?
Both address concealment, in different ways. The Pemko Markar FM3500 is a full mortise hinge whose fasteners are concealed when the door is closed, with an optional security stud for added tamper resistance, and it is Grade 1. The NGP HD1100A is a concealed continuous geared hinge in an 83 in length, 10C fire rated 90 minute on hollow metal, and is listed as Grade 3. Choose on the duty and the label requirement of the opening, since the FM3500 is engineered for correctional and high security doors up to 900 lbs.
17) Does an aluminum geared continuous hinge give me the same corrosion resistance as the Pemko FM3500?
They are different material systems. The FM3500 is 12 gauge 304 stainless steel and is offered in a satin stainless steel finish. The ABH A120HD, A135HD, A210HD and A460HD are aluminum continuous gear hinges, and the NGP HD5400A is an aluminum alloy construction geared hinge. If you want stainless in a full mortise continuous hinge from the comparable set, the BEST 651 is a stainless steel full mortise continuous hinge. Match the material to the exposure of the opening.
18) What continuous hinge is easiest to install if I am hanging doors without a full template layout?
The Pemko Markar FM3500 uses a symmetrically templated hole pattern and ships with custom #12-24 x 7/16 in PFHMS undercut stainless machine screws, so the layout is templated and repeatable across a run of doors. If you want an install oriented alternative in a geared hinge, the ABH A120HD is a full mortise heavy duty aluminum continuous gear hinge with Easy Install Technology, and it uses the same full mortise prep concept.
How fast can I get the Pemko FM-3500 6FT 8IN SS 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 Pemko FM-3500 6FT 8IN SS come with a warranty?
Absolutely. The Pemko FM-3500 6FT 8IN SS 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 Pemko FM-3500 6FT 8IN SS?
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 Pemko FM-3500 6FT 8IN SS from ZenSupply?
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