Don-Jo EST-103 Extended Lip AS...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$26.66
$18.93
Don-Jo EST-103 Extended Lip ASA Strike, 4-7/8" x 3" for Commercial Doors

Don-Jo EST-103 Extended Lip ASA Strike, 4-7/8" x 3" for Commercial Doors

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Model: EST-103-630
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$26.66
$18.93
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Don-Jo EST-103 Extended Lip ASA Strike — 4-7/8" x 3" Commercial Door Strike

The Don-Jo EST-103 is a heavy-duty Extended Lip ASA Strike designed for commercial door applications requiring reliable latch engagement and a secure, durable fit. Measuring 4-7/8" in height and 3" in width — with the width measured from the center of the screw hole to the end of the lip — this strike features a single latch hole and is constructed from 13-gauge (.095) steel for long-lasting performance. Available in multiple finishes including DU, 622, and 630, the EST-103 is a versatile solution for a wide range of commercial door hardware installations.

Key Features

  • Extended Lip Design: ASA-pattern extended lip provides reliable latch capture and secure door closure in commercial applications.
  • Precise Dimensions: 4-7/8" height and 3" width (measured from center of screw hole to end of lip) for accurate fit and straightforward installation.
  • Heavy-Gauge Construction: Built from 13-gauge (.095) steel for exceptional strength and durability in high-traffic commercial environments.
  • Single Latch Hole Configuration: Features 1 latch hole, providing a clean, purpose-built fit for standard latch bolt applications.
  • Multiple Finish Options: Available in DU, 622, and 630 finishes to coordinate with existing door hardware and architectural requirements.
  • Convenient Shelf Pack Quantity: Sold in shelf packs of 5, making it easy to stock for multi-door projects or ongoing maintenance needs.

Technical Specifications

  • Subcategory: Door Strikes
  • Product Group: Parts and Accessories
  • Product Subgroup: Door Strikes and Strike Boxes
  • Product Type: Door Strikes
  • Commercial/Residential: Commercial
  • Product Category: Parts and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Don-Jo EST-103?

Don-Jo door strike products are engineered for professional-grade performance, with the EST-103 delivering heavy-duty reliability through its 13-gauge (.095) steel construction and precise ASA-pattern extended lip geometry. Designed specifically for commercial applications, this strike provides consistent latch engagement and long-term durability where dependable door hardware performance is essential.

Manufacturer Resources

DON-JO Strike Plates

Product Specs

Subcategory:
Door Strikes
Product Group:
Parts and Accessories
Product Subgroup:
Door Strikes and Strike Boxes
Product Type:
Door Strikes
Commercial/Residential:
Commercial
Product Model:
EST 103
Door Strike:
Extended Lip ASA Strike
Product Category:
Parts and Accessories
Department:
Door Hardware

Don-Jo EST-103-630 – Frequently Asked Questions

1) Will the Don-Jo EST-103 fit a standard ASA strike prep in my frame?
The EST-103 is cut to the ASA pattern at 4-7/8 inches high, so it drops into a frame already prepped for a standard ASA (T-strike) cutout, which is the prep most commercial hollow metal frames carry. The 3 inch dimension is the lip run, measured from the center of the screw hole out to the end of the lip, so the extra length sits proud of the jamb rather than in the mortise. If your frame is prepped for a 4-7/8 x 1-1/4 inch strike, the pocket is the same; you are only changing how far the lip projects.
2) Why would I use an extended lip strike instead of a standard ASA strike?
You use an extended lip when the jamb is deeper than the door face sits, so a normal lip leaves the latch scraping the frame or the trim edge. The EST-103 carries the lip out to 3 inches from the screw hole centerline, which covers the gap on deep-return frames, applied stop jambs, and openings where wall finish or a wood casing sits between the latch and the strike. On a flush hollow metal frame with a normal stop, a standard-lip ASA strike is the simpler part and the lip will not stick out into the opening.
3) How many latch holes does the EST-103 strike have, and will it work with a lock that has a deadbolt?
One latch hole. The EST-103 is a single-opening strike, so it takes the latchbolt only. A mortise lock or an interconnected set that throws a separate deadbolt into the frame needs a two-hole strike or a separate deadbolt strike above it, not this part.
4) Can I use a Don-Jo EST-103 on a pair of doors with no mullion?
No. The EST-103 is a single ASA strike that mounts in a jamb, so it needs a frame or a mullion to land on. On an active/inactive pair the inactive leaf carries the strike, and on a true double door with no center post you need a strike made for that condition, such as the Detex 92 Strike Kit for double doors.
5) I am replacing a bent strike on an existing commercial door. Is the EST-103 a direct swap?
If what you pulled off is an ASA/T-strike, yes on the mortise, since the EST-103 keeps the 4-7/8 inch ASA body. What changes is the lip: at 3 inches from the screw hole centerline it will run further into the opening than a standard-lip strike, so check the door does not swing against it and that any adjacent stop or trim clears. If the old strike was a small 2-3/4 inch residential-style plate, this is a bigger cutout and it is not a drop-in.
6) Is the Don-Jo EST-103 strong enough for a high traffic commercial entry?
It is 13-gauge (.095) steel, which is the heavy end for a face-applied strike and is what you want on doors that get kicked, pulled, and cycled all day. Don-Jo lists it as a commercial part, and the gauge is the reason: a thinner strike deforms at the lip where the latch rides. For an office suite, a school corridor, or a multi-tenant common door, the material is not the limiting factor, the frame and the anchors are.
7) Does the EST-103 come with screws, or do I need to order fasteners separately?
Don-Jo publishes the EST-103 as the strike itself, in shelf packs of 5. Plan on reusing the existing frame screws or supplying your own machine screws to match the frame tapping. If you specifically need a strike supplied with tamper resistant fasteners, the Detex 92 Strike Kit from the 90 Strike Series is sold that way.
8) Is the Don-Jo EST-103 strike handed?
No handing to specify. The EST-103 is symmetrical top to bottom and there is one finish choice to make, nothing else. The lip bends toward the door face, so it is oriented by which jamb you mount it in, not by a left or right part number. That makes it easy to stock for a building where openings swing both ways.
9) What is the difference between the Don-Jo EST-103 and a pipe adapter strike?
Different openings entirely. The EST-103 is a flat ASA strike for a conventional door frame. A pipe adapter strike like the Trimco 1260P is made to give a latch something to catch on a round post or pipe jamb, the kind you find on gates and some tubular frames. If your jamb is round, the EST-103 will not sit flat on it.
10) What finishes does the Don-Jo EST-103 extended lip strike come in?
Three: 630 satin stainless steel, 622 matte black, and DU duronodic brown coated. 630 is the default match for most commercial lever and mortise trim, 622 covers black hardware packages, and DU matches dark bronze anodized aluminum storefront and older duranodic frames. If you are standardizing a building, pick the one that matches the existing lock trim rather than the frame paint, since the strike sits right beside the latch.
11) How many EST-103 strikes come in a pack for a multi-door job?
They ship in shelf packs of 5, which suits stocking a maintenance cart or covering a corridor of openings in one order. For a single door replacement you are buying four spares, which most property managers treat as a feature on a part that gets damaged rather than worn out.
How fast can I get the Don-Jo EST-103-630 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 Don-Jo EST-103-630 come with a warranty?
Absolutely. The Don-Jo EST-103-630 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 Don-Jo EST-103-630?
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 Don-Jo EST-103-630 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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