Pemko Markar FS3501 Series 12 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,414.00
$1,406.71
Pemko Markar FS3501 Series 12 Gauge Full Surface Continuous Hinge with 900 lb Weight Capacity

Pemko Markar FS3501 Series 12 Gauge Full Surface Continuous Hinge with 900 lb Weight Capacity

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Model: FS-3501 6FT 8IN SS
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$1,414.00
$1,406.71
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Pemko Markar FS3501 Series 12 Gauge Full Surface Continuous Hinge with 900 lb Weight Capacity

Heavy-Duty Continuous Hinge for High-Security Applications

The Pemko Markar FS3501 Series Full Surface Continuous Pin and Barrel Hinge delivers professional-grade performance for demanding security applications. Constructed from 304 stainless steel with 12 gauge thickness, this Grade 1 hinge supports weights up to 900 lbs with a maximum door width of 4'0";. Designed specifically for 1/8"; inset doors with 1-3/4"; thickness, it provides perfect alignment for retrofitting doors in correctional facilities and high-security locations using 2"; thick swing-type doors.

Professional Features & Benefits

  • Heavy-Duty Weight Capacity: Supports weights up to 900 lbs with 4'0"; maximum door width for demanding high-security applications.
  • Precision Door Compatibility: Designed for 1/8"; inset doors with 1-3/4"; thickness, ideal for correctional facility retrofitting with 2"; thick swing-type doors.
  • Grade 1 Stainless Steel Construction: 304 stainless steel with 12 gauge thickness provides exceptional durability and corrosion resistance.
  • Security-Enhanced Design: No exposed mounting fasteners when closed, with tamper-proof security screws available for maximum security applications.
  • Fire-Rated Performance: Fire ratings up to and including 3 hours with UL 10C certification for life safety compliance.
  • Maximum Swing Range: 180-Degree swing capability with 1/8"; minimum hinge clearance for full door operation.
  • Professional Hardware Package: Includes Custom #12-24 x 7/16"; PFHMS U/C S.S. fastener screw pack with stainless steel end pins.
  • Flexible Installation Options: 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: FS3501
  • Product Subgroup: Continuous Hinges
  • Product Substrate: Aluminum
  • Product Type: Continuous Hinges
  • Series: FS3501 Series
  • Subcategory: Continuous Hinges

Professional Applications

  • Correctional Facilities and High-Security Installations
  • Prison Doors and Security Gates
  • Extra Heavy Door Applications
  • Fire-Rated Door Assemblies
  • Extremely Tall Door Installations
  • Retrofit Applications in Existing Security Facilities
  • Government and Municipal High-Security Buildings

Tamper-Resistant Design

The FS3501 Series features no exposed mounting fasteners when the door is closed, providing enhanced security against tampering. Optional tamper-proof security screws are available for maximum security applications, making this hinge ideal for correctional facilities and other high-security environments where unauthorized access prevention is critical.

Why Choose Pemko Quality?

Pemko Markar continuous hinges deliver professional-grade reliability with 304 stainless steel construction and Grade 1 performance rated for weights up to 900 lbs. UL 10C fire rating certification and ANSI/BHMA Standard A156.26 compliance ensure code compliance and safety. Engineered for demanding correctional and 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:
FS3501
Product Category:
Door Hinges and Pivots
Department:
Door Hardware
Product Substrate:
Aluminum
Series:
FS3501 Series

Pemko FS-3501 6FT 8IN SS – Frequently Asked Questions

1) Will the Pemko Markar FS3501 continuous hinge work on my 1-3/4 inch door?
Yes, that is exactly what the FS3501 is built for. It's a full surface pin and barrel continuous hinge sized for 1-3/4 inch thick doors set at a 1/8 inch inset, and it needs 1/8 inch minimum hinge clearance to swing. If your opening is a different door thickness or a different inset, this is the wrong model. Door width is capped at 4'0".
2) How heavy a door can a Pemko FS3501 hinge carry?
Up to 900 lbs, on doors no wider than 4'0". That covers lead-lined, bullet resistant and detention-weight door leaves that would tear out conventional butt hinges. The load is spread down the full length of the hinge rather than into three or four butts, which is why the capacity gets that high. Construction is 304 stainless at 12 gauge.
3) Is the Pemko Markar FS3501 hinge fire rated?
Fire rated up to and including 3 hours, with UL 10C certification. That is a longer rating than most continuous geared hinges carry, which is what makes it usable on 3 hour stairwell and corridor assemblies rather than just 90 minute openings. It also complies with ANSI/BHMA A156.26 and is Grade 1.
4) Do I need a full surface or a full mortise continuous hinge?
Full surface, like the FS3501, mounts on the face of the door and frame with no machining, so it's the retrofit choice when you're rehanging an existing heavy or detention door and can't send it out to be prepped. Full mortise sits in the hinge edge and jamb rabbet and gives a flush look, but the door and frame have to be prepped for it. If you're specifying a mortise hinge instead, the BEST 651 is a stainless full mortise continuous hinge and the Design Hardware FMHD is a heavy duty full mortise geared version.
5) Can this Pemko hinge be tampered with from the secure side of a cell or detention door?
No fasteners are exposed when the door is closed, so there is nothing to attack with the door shut. Tamper-proof security screws are available as an option for correctional and detention work, and the hinge ships standard with a custom #12-24 x 7/16 inch PFHMS undercut stainless screw pack plus stainless end pins.
6) Can I use the Pemko FS3501 to retrofit 2 inch thick swing-type detention doors?
That is one of its stated uses. The FS3501 is built to align correctly when retrofitting doors in correctional facilities and high-security locations that use 2 inch thick swing-type doors. The hinge itself is sized for a 1-3/4 inch door at 1/8 inch inset, so confirm which of those two conditions your opening actually presents before ordering.
7) I need a full surface continuous hinge but my doors have a 1/16 inch inset. Does the Pemko FS3501 fit?
No. The FS3501 is cut for a 1/8 inch inset and won't align on a 1/16 inch inset opening. The NGP HD5700 is a full surface continuous geared hinge made for 1/16 inch door inset and covers 1-3/4 inch to 2-1/4 inch doors. For a 3/32 inch inset, the BEST 663HD is the heavy duty option.
8) What is the closest equivalent to the Pemko Markar FS3501 continuous hinge for a full surface application on a heavy door?
The FS3501 is a full surface continuous pin and barrel hinge in 304 stainless steel, 12 gauge, rated Grade 1 and carrying up to 900 lbs on doors to 4'0" wide. The nearest full surface peers are the BEST 664HD full surface continuous geared hinge, which is heavy duty and 90-minute UL fire rated, the Design Hardware FSHD full surface heavy duty continuous geared hinge, and the NGP HD5700 full surface geared hinge, which is built for a 1/16" door inset on 1-3/4" to 2-1/4" doors and is 10C fire rated 90 minutes on hollow metal. The key difference to weigh is construction type: the FS3501 is a pin and barrel hinge, while all three of those are geared hinges.
9) The FS3501 mounts to the face of the door and frame. What continuous hinge works when the opening calls for a mortised hinge instead?
The Pemko Markar FS3501 is a full surface hinge, meaning it mounts on the surface of the door and frame rather than into a routed pocket. When the detail calls for a mortised installation, the full mortise peers are the BEST 641 steel full mortise continuous hinge with hospital tips and the BEST 651 stainless steel full mortise continuous hinge with hospital tips, both medium duty; the Design Hardware FMHD full mortise heavy duty continuous geared hinge; and the ABH A120HD full mortise heavy duty aluminum continuous gear hinge with Easy Install Technology. Full mortise requires prep in both the door and the frame, which is why full surface is the usual choice for retrofit onto an existing opening.
10) Which continuous hinge should be specified when a fire rating longer than 90 minutes is required?
The Pemko Markar FS3501 carries fire ratings up to and including 3 hours with UL 10C certification and complies with ANSI/BHMA A156.26. Among the comparable geared hinges, the BEST 663HD and BEST 664HD are 90 minute UL fire rated, and the NGP HD1100A, HD5400A and HD5700 are 10C fire rated 90 minutes on hollow metal. For a 2 hour or 3 hour rated opening, the FS3501 is the one in this group that reaches that duration; always match the hinge rating to the rating stamped on the door and frame labels.
11) What lengths does the Pemko FS3501 continuous hinge come in?
Five stock heights: 6'8", 7'0", 7'2", 8'0" and 10'0", all in satin stainless steel. Match the hinge to the door leaf height, not the frame opening. Custom lengths and hole patterns are available if none of the stock heights suits, and the standard hole pattern is symmetrically templated.
12) Will a continuous hinge let the door swing a full 180 degrees against the wall?
The FS3501 swings 180 degrees, with 1/8 inch minimum hinge clearance required. That matters on equipment rooms and corridors where a gurney or a cart has to pass and the leaf needs to lay back flat against the adjacent wall.
13) What is the difference between a pin and barrel continuous hinge and a geared continuous hinge?
The FS3501 is a pin and barrel type: a continuous run of interlocking knuckles on a pin, the same principle as a butt hinge stretched the full height of the door. Geared hinges use a meshed gear channel with a cap, usually in aluminum, and are the more common commercial choice on standard weight doors. Pin and barrel in 12 gauge stainless is what gets used where the load and the abuse are extreme, such as detention. Geared alternatives include the ABH A120HD full mortise and the Design Hardware FSHD full surface.
14) Which continuous hinge meets a Grade 1 spec on the drawing?
The FS3501 is a Grade 1 hinge under ANSI/BHMA A156.26 with UL 10C fire certification up to 3 hours. If your spec section calls for Grade 1 continuous hinges on fire rated openings, that combination is what to check it against. Note that not every heavy duty continuous hinge is Grade 1: the NGP HD1100A concealed geared hinge, for instance, is a Grade 3.
15) What continuous hinge should be used on an offset full surface condition instead of the Pemko FS3501?
The Pemko Markar FS3501 is a straight full surface hinge sized to a 1/8" inset door at 1-3/4" thickness. When the door and frame faces are not in the same plane and the hinge has to bridge that offset, the Design Hardware FSOHD is a full surface offset heavy duty continuous geared hinge built for that condition. Measure the actual face-to-face offset at the hinge jamb before choosing, since a straight full surface hinge will not sit flat on an offset opening.
16) Which continuous hinges look like substitutes for the Pemko FS3501 but mount differently?
Two families read as close matches on a spec sheet and are not interchangeable with the Pemko Markar FS3501 at the opening. The ABH A460HD and the NGP HD5400A are half surface hinges, which mount on the door face but into the frame rebate, not on the frame face like the FS3501. The NGP HD1100A is a concealed geared hinge, which sits inside the opening and is invisible when the door is closed. All three are continuous hinges and all three prep differently from a full surface FS3501, so a swap means new hole patterns.
17) Is a Grade 1 continuous hinge required, or will a lower grade hinge work on the opening?
The Pemko Markar FS3501 is a Grade 1 hinge in 304 stainless steel and is written for correctional and high-security openings, extra heavy doors, and fire-rated assemblies. Of the comparable set, the NGP HD1100A is a Grade 3 concealed geared hinge. Where a facility standard, a spec section, or a code official calls out Grade 1 by name, the grade on the submittal has to match, so a Grade 3 hinge will not satisfy that line regardless of how the opening performs day to day.
18) The FS3501 comes in fixed lengths up to 10 feet. What continuous hinge fits a standard 83 inch opening?
The Pemko Markar FS3501 is stocked in satin stainless steel at 6'8", 7'0", 7'2", 8'0" and 10'0", with custom lengths and hole patterns available. For a standard 83" cut, the NGP HD1100A concealed, NGP HD5400A half surface, and NGP HD5700 full surface geared hinges are all 83" hinges. Length is measured to the hinge itself, not to the door leaf, so confirm the frame rabbet height before committing.
19) Which continuous hinge has a pinch-resistant or safety edge design as an alternative to the Pemko FS3501?
The Pemko Markar FS3501 is a pin and barrel hinge whose security emphasis is on tamper resistance: no exposed mounting fasteners when the door is closed, with tamper-proof security screws available. If the priority at the opening is occupant safety at the hinge edge rather than tamper resistance, the ABH A135HD is a heavy duty aluminum continuous gear hinge with a safety design. In schools, healthcare and childcare openings the two goals often both appear on the spec, so confirm which one governs the hinge line.
20) Does a stainless steel continuous hinge need to be specified, or will an aluminum geared hinge do the job?
The Pemko Markar FS3501 is 304 stainless steel at 12 gauge, chosen for durability and corrosion resistance, and is offered in satin stainless steel finish. The aluminum alternatives are the ABH A460HD, A120HD, A135HD and A210HD heavy duty aluminum continuous gear hinges and the NGP HD5400A, which is aluminum alloy construction. The BEST 651 is a stainless steel full mortise hinge and the BEST 641 is steel. For exterior openings, washdown areas, coastal sites and correctional interiors, stainless is the material buyers standardize on; aluminum geared hinges are the common choice on protected interior openings.
21) Will a stainless continuous hinge hold up in a wet or washdown area?
The FS3501 is 304 stainless steel throughout at 12 gauge, including the end pins, and the finish is satin stainless. 304 is the standard corrosion resistant grade used on kitchen, laundry and exterior service openings. Most competing continuous hinges in this class are aluminum alloy, which is a different corrosion profile.
How fast can I get the Pemko FS-3501 6FT 8IN SS delivered?
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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 FS-3501 6FT 8IN SS come with a warranty?
Absolutely. The Pemko FS-3501 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 FS-3501 6FT 8IN SS?
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