Pemko RS138 Series Full Mortis...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$289.00
$287.51
Pemko RS138 Series Full Mortise Continuous Geared Hinge for 1-3/8"; Residential Doors with 90 lb Capacity

Pemko RS138 Series Full Mortise Continuous Geared Hinge for 1-3/8" Residential Doors with 90 lb Capacity

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Model: DRS138-79
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$289.00
$287.51
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Pemko RS138 Series Full Mortise Continuous Geared Hinge for 1-3/8"; Residential Doors with 90 lb Capacity

Professional Continuous Hinge Solution for Residential Applications

The Pemko RS138 Series Full Mortise Continuous Geared Hinge is engineered specifically for 1-3/8"; thick residential doors weighing up to 90 lbs. This aluminum construction hinge features concealed leaves for enhanced safety and security, with 12"; bearing spacing for smooth operation and 180-Degree maximum swing capability. Designed for new door and frame applications, this Grade 3 hinge provides reliable performance with custom lengths available up to 10 feet.

Professional Features & Benefits

  • Door Thickness Compatibility: Specifically designed for 1-3/8"; thick residential doors with optimized shorter leaves for proper fit and function.
  • Weight Capacity: Supports doors up to 90 lbs with reliable Grade 3 performance for residential applications.
  • Concealed Leaf Design: Applied to conceal both leaves providing enhanced safety and security while maintaining clean aesthetics.
  • Aluminum Construction: Durable aluminum material provides corrosion resistance and long-lasting performance at 1 lb per foot weight.
  • Flexible Installation: 12"; bearing spacing with 180-Degree maximum swing and custom lengths available from 79"; minimum to 10"; maximum.
  • Full Mortise Mounting: Professional full mortise installation with self-drilling Teks fasteners for secure attachment.
  • Fire Door Compatible: Approved for use on swinging type fire doors meeting commercial building requirements.
  • Manufacturer Warranty: 10 year warranty provides added confidence and long-term protection.

Technical Specifications

  • Department: Door Hardware
  • Grade: Grade 3
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: RS138
  • Product Subgroup: Continuous Hinges
  • Product Substrate: Aluminum
  • Product Type: Continuous Hinges
  • Series: RS138 Series
  • Subcategory: Continuous Hinges

Professional Applications

  • Residential Entry Doors
  • Multi-Unit Residential Properties
  • Apartment and Condominium Buildings
  • Residential Fire Door Applications
  • Custom Home Construction
  • Door Replacement Projects
  • Residential Security Upgrades

Why Choose Pemko Quality?

Pemko RS138 Series continuous hinges deliver professional-grade reliability with durable aluminum construction rated for doors up to 90 lbs and 1-3/8"; thickness. The 10 year warranty provides long-term protection and confidence. Engineered for demanding residential applications where dependable performance and concealed security features are essential.

Product Specs

Subcategory:
Continuous Hinges
Grade:
Grade 3
Product Group:
Door Hinges and Pivots
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Product Model:
RS138
Product Category:
Door Hinges and Pivots
Department:
Door Hardware
Product Substrate:
Aluminum
Series:
RS138 Series

Pemko DRS138-79 – Frequently Asked Questions

1) Does a full mortise continuous hinge like the RS138 need the door and frame prepped, or can I retrofit it?
Full mortise means both leaves get mortised into the edge of the door and the frame rabbet, so it is meant for new door and frame work where you control the prep. Pemko calls out new door and frame applications for the RS138. Retrofitting an existing opening without cutting is a job for a surface mount hinge, like the Design Hardware FSHD full surface or the ABH A460HD half surface, which screw to the face of the door and frame.
2) Will a continuous geared hinge stop the doors in my apartment building from sagging?
That is the main reason property managers switch to one. A continuous geared hinge runs the full height of the door instead of carrying the load on three or four butt hinges, so the weight is spread down the whole edge and the screws do not pull out of the jamb over time. The RS138 supports the door on bearings spaced every 12 inches and is rated to 90 lbs, which covers typical unit entry and interior doors at 1-3/8 inch thickness.
3) What continuous geared hinge should I use if the door is 1-3/4 inch thick instead of 1-3/8 inch?
The Pemko RS138 is built specifically for 1-3/8 inch thick doors with shorter leaves sized to that thickness, so it is not the part for a 1-3/4 inch door. The NGP HD5700 is a full surface continuous geared hinge with a 1/16 inch door inset sized for 1-3/4 inch to 2-1/4 inch doors, which covers that range directly. It mounts to the face of the door and frame rather than into a mortise, so confirm the opening has the clearance for a surface-applied leaf before ordering.
4) Is there a concealed continuous geared hinge like the Pemko RS138 but for commercial hollow metal openings?
The NGP HD1100A is the closest equivalent in concept: a concealed continuous geared hinge, furnished at 83 inches, carrying the same Grade 3 rating the Pemko RS138 carries. The NGP unit is 10C fire rated for 90 minutes on hollow metal, which is the label language a commercial opening schedule usually calls for. The RS138 concealed-leaf design is aimed at 1-3/8 inch doors, so on a standard commercial hollow metal leaf the HD1100A is the one that lines up.
5) Which continuous hinge do I order for a 90 minute UL fire rated opening?
For an opening where the label needs to state a 90 minute UL fire rating on the hinge itself, the BEST 663HD is a heavy duty continuous hinge with a 90 minute UL fire rating for 3/32 inch inset doors, and the BEST 664HD is the full surface heavy duty geared hinge with the same 90 minute UL rating. The inset dimension is what separates them from each other alongside the mounting style, so match the 3/32 inch inset on the 663HD against how the existing door sits in the frame before choosing.
6) Do I need to order left hand or right hand for the Pemko RS138 continuous hinge?
No handing to specify. A continuous geared hinge is symmetrical, so the same part works on a left or right hand door. You pick length and finish only, 79 or 83 inch, clear anodized or dark bronze anodized.
7) Are the fasteners included with the Pemko RS138 hinge, or do I need to buy screws?
It installs with self drilling Teks fasteners, so there is no separate drilling and tapping step at the frame. Nothing else is required to hang the door beyond the mortise prep in the door edge and jamb.
8) Will the RS138 hinge pinch fingers, and is there a safety version?
Both leaves are concealed on the RS138, so the geared knuckle is covered and the gap along the hinge edge is closed off. That is why these get specified in multi-family and any building with children. If you need the same protection on a heavier commercial door, the ABH A135HD is a heavy duty geared hinge with a safety design.
9) I need an 83 inch continuous hinge - what are my options besides the Pemko RS138?
The Pemko RS138 is furnished at 79 inches and 83 inches in clear anodized aluminum and dark bronze anodized aluminum. At 83 inches, the NGP HD1100A is a concealed Grade 3 hinge, the NGP HD5400A is a half surface aluminum alloy hinge, and the NGP HD5700 is a full surface hinge with a 1/16 inch door inset for 1-3/4 inch to 2-1/4 inch doors. The three NGP units differ by how the leaves mount and what door thickness they suit, so pick on mounting style first and length second.
10) What is the difference between the Pemko RS138 and the Design Hardware FMHD?
Both are full mortise continuous geared hinges, so the door and frame prep is the same family of work. The Design Hardware FMHD is a heavy duty unit, while the Pemko RS138 is a Grade 3 hinge built around 1-3/8 inch doors at 90 lbs in aluminum. If the opening is a residential-thickness leaf within that weight, the RS138 is sized for it; if the leaf is a heavier commercial door, the FMHD is the heavy duty full mortise equivalent.
11) Is the ABH A135HD a direct substitute for the Pemko RS138?
Not a direct one. The ABH A135HD is a heavy duty aluminum continuous gear hinge with a safety design, meaning the pinch-point at the hinge side is guarded. The Pemko RS138 also addresses that concern differently, by concealing both leaves for safety and security on a 1-3/8 inch door at up to 90 lbs. The two share aluminum gear hinge construction but sit at different duty levels, so treat the A135HD as the heavy duty option when the door weight or cycle rate exceeds what the RS138 is rated for rather than as a like-for-like replacement.
12) What is the Pemko RS138 hinge made of, and will it hold up in a coastal or exterior opening?
Aluminum, in an anodized finish, either clear or dark bronze. Anodized aluminum resists corrosion, which is why these get used on exterior residential entry doors. Where you want steel or stainless instead, the BEST 641 is a steel full mortise continuous hinge and the BEST 651 is stainless.
How fast can I get the Pemko DRS138-79 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 DRS138-79 come with a warranty?
Absolutely. The Pemko DRS138-79 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 DRS138-79?
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 DRS138-79 from ZenSupply?
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