Don-Jo 9175 Extended Lip Strik...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$15.46
Don-Jo 9175 Extended Lip Strike, 2-1/4" x 1-3/4", 18 Gauge Commercial Door Strike

Don-Jo 9175 Extended Lip Strike, 2-1/4" x 1-3/4", 18 Gauge Commercial Door Strike

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Model: 9175-620
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$15.46
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Don-Jo 9175 Extended Lip Strike — 2-1/4" x 1-3/4" Commercial Door Strike

The Don-Jo 9175 is a commercial-grade Extended Lip Strike measuring 2-1/4" in height and 1-3/4" in width, constructed from 18-gauge (.050) steel for dependable durability in demanding door hardware applications. Featuring a single latch hole and optional radius corners, this door strike is designed to accommodate a wide range of commercial door installations. Note that the width measurement is taken from the center of the screw hole to the end of the lip, ensuring precise fitment. Available in multiple finishes including DU, 605, 609, 619, 620, 622, 629, and 630 to match virtually any door hardware finish requirement.

Key Features

  • Precise Dimensions: Measures 2-1/4" in height and 1-3/4" in width, with width measured from the center of the screw hole to the end of the lip for accurate installation.
  • Heavy-Gauge Construction: Manufactured from 18-gauge (.050) steel, providing robust strength and long-term reliability for commercial door applications.
  • Extended Lip Design: Extended lip configuration offers enhanced latch engagement and improved door security over standard lip strikes.
  • Single Latch Hole: Features one latch hole for straightforward, clean installation on compatible door frames.
  • Radius Corners Available: Optional radius corners provide installation flexibility to suit a variety of door frame profiles and aesthetic preferences.
  • Wide Finish Selection: Available in eight finishes — DU, 605, 609, 619, 620, 622, 629, and 630 — to coordinate with existing door hardware.
  • Convenient Shelf Pack: Sold in shelf packs of 10, making this strike an efficient choice for contractors and facilities managers stocking multiple units.

Technical Specifications

  • Product Group: Parts and Accessories
  • Subcategory: Door Strikes
  • 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 9175?

Don-Jo door strike products are engineered to deliver professional-grade performance with heavy-gauge steel construction rated for the rigors of commercial door hardware environments. The 9175 Extended Lip Strike combines precise dimensional tolerances — 2-1/4" x 1-3/4" — with a versatile finish offering and optional radius corners, making it a reliable and adaptable solution for contractors and facility professionals who demand consistent quality across every installation.

Manufacturer Resources

DON-JO Strike Plates

Product Specs

Product Group:
Parts and Accessories
Subcategory:
Door Strikes
Product Subgroup:
Door Strikes and Strike Boxes
Product Type:
Door Strikes
Commercial/Residential:
Commercial
Product Model:
9175
Door Strike:
Extended Lip Strike
Product Category:
Parts and Accessories
Department:
Door Hardware

Don-Jo 9175-620 – Frequently Asked Questions

1) What does the extended lip on a Don-Jo 9175 strike actually do for a door that isn't latching?
The 9175 is an extended lip strike, meaning the lip runs out past a standard strike to catch the latch and guide it in. That's the fix when the door has settled, the frame has shifted, or the gap between door and frame has opened up enough that the latch skates past a standard strike instead of dropping into it. It's an 18-gauge (.050) steel strike, 2-1/4 inches by 1-3/4 inches, with a single latch hole.
2) How is the 1-3/4 inch width on the Don-Jo 9175 strike measured?
From the center of the screw hole out to the end of the lip, not across the whole plate. That matters because it's the number that tells you how far the lip projects toward the door face. Measure your existing strike the same way before matching it, or the lip will come up short or stand proud of the jamb. The 2-1/4 inch figure is the height.
3) Do I need square or radius corner strikes for my door frames?
It depends on the frame prep already cut into your jamb. Hollow metal frames are commonly prepped with a radiused cutout, and a square-corner strike won't seat flush in one. The 9175 is offered with optional radius corners for exactly that reason. Pull one existing strike off and look at the cutout corners before you order the batch.
4) Does the Don-Jo 9175 strike work for a pair of doors with no mullion?
No. The 9175 is a single-latch-hole lip strike for a latch entering a frame jamb. A pair of doors meeting at the center, where one leaf latches into the other, needs a strike built for that condition, such as the Detex 92 Strike Kit for double doors, which comes with tamper resistant fasteners. Use the 9175 on single openings and on the active leaf where it latches into a mullion or jamb.
5) Can a Detex 92 strike kit be used in place of a Don-Jo 9175 extended lip strike?
No — they solve different problems. The Don-Jo 9175 is an extended lip strike with a single latch hole, 2-1/4 inches high by 1-3/4 inches wide in 18-gauge (.050) steel, meant to catch a latch in a frame where the lip needs to reach past the stop. The Detex 92 Strike Kit belongs to the 90 Strike Series and is a double door strike kit supplied with tamper resistant fasteners, so it is specified for a pair of doors where the strike mounts to the inactive leaf rather than to a jamb. If the opening is a single door with a standard frame prep, the 9175 is the strike form that fits; if the requirement is a double-door strike with tamper resistant fasteners, the Detex 92 kit is the one that answers it.
6) What is the difference between a Don-Jo 9175 extended lip strike and a Trimco 1260P pipe adapter strike?
The Don-Jo 9175 is a flat commercial strike with an extended lip and one latch hole, 2-1/4 inches by 1-3/4 inches, formed from 18-gauge (.050) steel, with the width dimension taken from the center of the screw hole out to the end of the lip. The Trimco 1260P is a pipe adapter strike from the 1260 Series, supplied as the strike only, and it is the part chosen when the latch has to engage a round pipe or tube rather than a flat jamb face. Measure the surface the latch lands on before choosing: a flat hollow metal or wood frame takes the 9175, a pipe or tubular post takes the 1260P.
7) Which finishes does the Don-Jo 9175 strike come in, and what matches my existing lever hardware?
Eight finishes: 605 polished brass, 609 antique brass, 619 satin nickel, 620 antique nickel, 622 matte black, 629 bright stainless, 630 satin stainless, and DU duronodic brown. Those numbers are the standard BHMA finish codes stamped on most commercial lever and lock hardware, so match the code on what's already on the opening rather than eyeballing color. On commercial work 630 satin stainless is the most common lever finish, and 626 satin chrome hardware is normally paired with a 630 strike.
8) Is the Don-Jo 9175 heavy enough for a school or hospital corridor door?
It's built as commercial hardware, 18-gauge (.050) steel, and Don-Jo lists it for office buildings, schools, healthcare, retail, warehouse, multi-tenant residential, and government work. Eighteen gauge is a full-thickness strike rather than the thin stamped part that ships in a residential lockset box, which is what you want on a door cycling all day.
9) Will an extended lip strike stop the latch getting hung up on the jamb edge when the door is out of square?
That's the main reason to fit one. The extended lip carries further toward the door face, so a latch that has been catching the edge of the jamb or the short lip of a standard strike rides up the ramp and seats. It won't fix a badly sagging door or worn hinges, though. If the latch is missing the pocket vertically rather than horizontally, the hinges are the problem and a longer lip won't reach it.
10) Is the Don-Jo 9175 the right part if I need to adapt a strike to a pipe or round column?
No, the 9175 is a flat lip strike for a standard door frame. For latching into round pipe or a tubular post you need a curved adapter strike such as the Trimco 1260P Pipe Adapter Strike from the 1260 Series, which is made for that condition.
11) We are standardizing strikes across a building with both single and double doors — do we need more than one part?
Yes, plan on at least two. The Don-Jo 9175 covers the single-door openings: an extended lip strike in 18-gauge (.050) steel at 2-1/4 inches by 1-3/4 inches, sold in shelf packs of 10 and offered in DU, 605, 609, 619, 620, 622, 629, and 630 so the strikes can be matched to whatever finish is already on the hardware. Pairs of doors are a separate line item — the Detex 92 Strike Kit is a double door strike kit with tamper resistant fasteners in the 90 Strike Series, and it is what the inactive leaf calls for. Anywhere the latch engages a pipe or tube instead of a frame, the Trimco 1260P pipe adapter strike from the 1260 Series is the applicable form.
12) How many Don-Jo 9175 strikes come in a pack?
The 9175 ships in shelf packs of 10 in a single finish. If you're standardizing an apartment building or a floor of offices, order the count in multiples of ten and keep the spares on the truck, since a strike is the part you discover you need once the door is already hung.
How fast can I get the Don-Jo 9175-620 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 9175-620 come with a warranty?
Absolutely. The Don-Jo 9175-620 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 9175-620?
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
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