Pemko 110 Series Interlocking ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$73.38
$57.64
Pemko 110 Series Interlocking Threshold cross-section drawing showing 3-1/2" width and 5/8" height dimensions with hook profile detail

Pemko 110 Series Interlocking Threshold 3-1/2" Width x 5/8" Height with Hook System

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Model: 110D 36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$73.38
$57.64
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Pemko 110 Series Interlocking Threshold — 3-1/2" Wide x 5/8" High

The Pemko 110 Series Interlocking Threshold is a residential-grade door sill engineered to seal the gap between the floor and door bottom, blocking moisture infiltration and drafts at pre-hung door openings. Its interlocking hook design locks the threshold securely in place without relying on adhesive alone, making it a reliable long-term solution for entry doors, patio doors, and weather-exposed openings in single-family and multi-unit residential properties.

Key Features

  • Interlocking Hook System: Furnished with #61 hook and nails with "J" hook design for a secure, rattle-free fit and consistent weather seal.
  • Dual Material Options: Available in Mill Finish Aluminum, Dark Bronze Anodized Aluminum, and Mill Finish Extruded Bronze (Brass) — choose the material that matches your door hardware and corrosion requirements.
  • Wide Length Range: Cut-to-fit from 24" minimum to 185" maximum, accommodating standard single doors through wide commercial-residential openings.
  • Complete Fastener Kit: Includes WS #10 x 1.5" fasteners for a secure, long-term installation.
  • Alternate Hook Availability: Compatible alternate hooks available for retrofit and specialized applications.

Technical Specifications

  • Width: 3-1/2"
  • Height: 5/8"
  • Hook Count: 61 hooks
  • Length Range: 24" – 185"
  • Weight: 0.49 lbs
  • Materials: Aluminum; Extruded Bronze (Brass)
  • Series: 110 Series
  • Model: 110

Typical Applications

  • Residential entry and exterior doors
  • Patio and sliding door systems
  • Multi-unit residential properties
  • Pre-hung door installations
  • Replacement and retrofit threshold projects
  • Weather-exposed and moisture-critical door openings

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Residential Thresholds and Sills for Pre-Hung Openings
Product Model:
110
Product Dimension:
W: 3-1/2", H: 5/8"
Product Category:
Door Trim and Accessories
Department:
Door Hardware
Series:
110 Series

Pemko 110D 36 – Frequently Asked Questions

1) Will the Pemko 110 threshold fit a standard 36 inch entry door?
Yes. The 110 Series interlocking threshold is stocked in a 36 inch length, which covers a standard single entry door opening, and the profile is cut-to-fit from 24 inches up to 185 inches if your opening measures out differently. Measure the frame width at the sill, not the door slab, and cut down to that.
2) How tall does the Pemko 110 threshold sit, and will the door still clear it?
The 110 sits 5/8 inch high and spans 3-1/2 inches wide. That 5/8 inch is the number that decides it: your door bottom has to clear 5/8 inch above the finished floor, and any sweep or door bottom on the slab eats into that. On a pre-hung replacement where you are swapping like for like, measure the old sill height before you order.
3) What does the interlocking hook on the Pemko 110 threshold actually do?
The hook is what ties the sill to the door bottom instead of leaving the seal to a sweep alone. The 110 ships with the #61 hook and nails in a "J" hook design, so the door bottom drops into the hook as it closes and the joint stays tight and rattle-free. That is the difference between this and a flat saddle threshold, which just covers the floor joint and relies entirely on a separate sweep for the weather seal.
4) Is the Pemko 110 a direct replacement for an existing interlocking threshold?
On a retrofit, the hook is what has to match, not just the width. The 110 is furnished with the #61 hook, and Pemko lists alternate hooks for retrofit and specialized applications, so if the existing door bottom carries a different hook profile you specify the alternate rather than replacing the door bottom. Confirm the old sill measures close to 3-1/2 inches wide by 5/8 inch high before you treat it as a straight swap.
5) Which finish of the Pemko 110 threshold should I use on an exposed exterior door?
Three finishes: mill finish aluminum (110A), dark bronze anodized aluminum (110D), and mill finish extruded bronze/brass (110B). For a weather-exposed opening the anodized aluminum and the extruded bronze both hold up better cosmetically than bare mill aluminum, which will grey out. Bronze is the one to pick when you are matching brass or bronze entry hardware; dark bronze anodized matches oil-rubbed and dark bronze trim.
6) Do I need to buy screws separately for a Pemko 110 threshold?
No. The 110 comes with WS #10 x 1.5 inch fasteners plus the #61 hook and nails, so the sill, the hook, and the anchors are all in the box. What you supply is the sealant bead under the threshold and, on masonry or concrete sills, anchors suited to that substrate instead of the wood screws provided.
7) Can I use one Pemko 110 threshold across a double or patio door opening?
Yes, within the length range. The 110 runs up to 185 inches, so a single continuous piece covers a French pair or a sliding patio opening without a butt joint in the middle of the sill, which is where water usually finds its way in. Order the length that covers the full frame opening and cut to fit on site.
8) Should I use an interlocking threshold or a plain saddle threshold on an entry door?
Interlocking is the choice when the opening takes weather. The 110 uses a hook that engages the door bottom so wind-driven rain and drafts have no straight path under the door. A plain saddle threshold is easier to retrofit because it needs nothing on the slab, but it depends on a sweep for its seal and that sweep wears. If the door already has a hooked door bottom, or you are willing to add one, the interlocking sill is the longer-lasting seal.
9) Will the Pemko 110 threshold work on a multi-family building where I need every unit the same?
It standardizes well. The 110 is one profile, 3-1/2 by 5/8 inch, in three finishes, cut to fit anywhere from 24 to 185 inches, so every unit door in a building runs the same part number and the same hook, with only the cut length changing. For a property manager stocking spares, that means one finish and one hook to hold rather than a shelf of sizes.
How fast can I get the Pemko 110D 36 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 110D 36 come with a warranty?
Absolutely. The Pemko 110D 36 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 110D 36?
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 110D 36 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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