You may also like
Sure-Loc Durango Square Knob
The Sure-Loc Durango Square Knob is a tubular knobset from Sure-Loc. It is offered in Dummy, Passage, Privacy and Entry functions. Available in Satin Nickel and Flat Black finishes, so it coordinates with the rest of the Sure-Loc Durango line.
Specifications
- Hollow, mushroom-shaped knob Formed brass Adjustable 2⅜″ – 2¾″ (60-70mm) backset Fits doors 1⅜″ – 1¾″ (35-45mm) thick Entry keyed alike in sets of 4 RESOURCES Download Spec Sheet
Sure-Loc bored locks fit standard residential door preparation with an adjustable 2-3/8" or 2-3/4" backset and reversible handing, and ship direct from the manufacturer.
Manufacturer Resources
Product Specs
- Subcategory:
- Knobsets
- Product Type:
- Knobsets
- Product Group:
- Mechanical Locks
- Product Subgroup:
- Bored Locksets
- Commercial/Residential:
- Residential
- Handle Type:
- Knob
- Series:
- Durango
- Electronic:
- No
- Product Attribute:
- Cylindrical Locks
- Product Material:
- Brass
- Product Substrate:
- Brass
- Product Category:
- Mechanical Locks
- Department:
- Door Hardware
Sure-Loc DU100-SQ 15 – Frequently Asked Questions
1) Will the Sure-Loc Durango knob fit a 1-3/8 inch interior door, or does it need a 1-3/4 inch door?
Both. The Durango Square Knob fits doors from 1-3/8 to 1-3/4 inches thick (35-45mm), which covers standard interior residential doors and thicker exterior slabs alike. No spacer kit or separate thickness version to order.
2) Do I have to know the backset before ordering the Sure-Loc Durango Square Knob?
No. The latch is adjustable for both 2-3/8 and 2-3/4 inch backsets (60-70mm), so it drops into whichever hole spacing your door was bored for. Handing is reversible too, so the same unit works on a left or right hand door.
3) Which Sure-Loc Durango knob function do I use for a bedroom, a closet, and a front door?
Four functions are offered on the Durango Square Knob. Privacy for bedrooms and baths (push-button lock, no key). Passage for hallways and closets (latches, never locks). Entry for exterior or lockable doors (keyed outside). Dummy is a non-turning surface-mounted pull for a closet or a false door, with no latch at all.
4) Can I key several Sure-Loc Durango entry knobs to the same key?
The Entry function ships keyed alike in sets of 4, so a landlord or builder doing a group of units or several exterior doors on one house can run a single key across them without rekeying. Passage, Privacy and Dummy are non-keyed.
5) Is the Sure-Loc Durango knob suitable for a commercial building or office corridor?
It is built as a residential tubular knobset, not a commercial-duty lock. For an office, school or other commercial opening, look at a Grade 1 or Grade 2 cylindrical knob instead, such as the Corbin Russwin CK4310 (Grade 1 passage) or the Dexter C2000 Series Grade 2 entry/office knob. Use the Durango on apartments, houses and light multi-family interiors.
6) Will the Sure-Loc Durango knob go into an existing door with a standard 2-1/8 inch bore?
Yes, it is a bored tubular lockset made for standard residential door prep, so it replaces an existing knob in the same holes as long as the door is 1-3/8 to 1-3/4 inches thick and bored for a 2-3/8 or 2-3/4 inch backset. No new prep needed on a typical swap.
7) What is a comparable residential knobset to the Sure-Loc Durango Square Knob if I need the same four functions from one brand?
The Pamex Baron FTF line covers the same residential function spread in one series: FTF-00 in Entrance/Office, FTF10 in Privacy/Bed/Bath, and FTF30 in Passage/Hall/Closet, all Grade 3 and all fitting doors 1-3/8 inch to 1-3/4 inch. The Sure-Loc Durango Square Knob is a residential tubular knobset offered in Dummy, Passage, Privacy and Entry, with an adjustable 2-3/8 inch to 2-3/4 inch backset and a 1-3/8 inch to 1-3/4 inch door thickness range. The difference is shape and material: the Durango is a formed brass square-styled knob, while the Baron is a Pamex-styled knob.
8) I need a knob for a commercial corridor, not a house. What should I use instead of the Sure-Loc Durango Square Knob?
The Durango Square Knob is a residential bored lockset, so for a commercial opening step up to a graded cylindrical lock. The Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset with an interchangeable core, fire rated, fitting doors 1-3/8 inch to 2-1/4 inch. For keyed commercial use, the Sargent 8XG04 is a Grade 1 heavy duty storeroom/closet knob lock with a 2-3/4 inch backset, and the BEST 8K Series is a Grade 1 heavy duty entrance function single cylinder knob lock.
9) What is the closest alternative to the Sure-Loc Durango Square Knob in Entry function?
For a keyed residential entry knob, the Kwikset 400P-CP Polo is a Grade 3 keyed entry knob for doors 1-3/8 inch to 1-3/4 inch shipping with a round corner adjustable latch and round corner strike, and the Cal-Royal BER00 is a Grade 3 Entrance/Office knob lock with a Kwikset keyway for the same 1-3/8 inch to 1-3/4 inch door range. The Durango Entry is keyed alike in sets of four, which suits a landlord doing several units on one key; the Cal-Royal option matters instead if you are keying into an existing Kwikset system.
10) My door is 2 inches thick. Can I use the Sure-Loc Durango Square Knob, or do I need something else?
The Durango Square Knob fits doors 1-3/8 inch to 1-3/4 inch, so a 2 inch door needs a different lock. Deltana knobs cover 1-3/8 inch to 2 inch, including the 6171 Round Knob Entry, the 3381 Egg Knob Entry and the 6112 St. Thomas Privacy. On the commercial side, the Corbin Russwin CK4310 Grade 1 passage/closet lock and the CK4851 Grade 1 entrance/office lock both cover 1-3/8 inch to 2 inch, and the Falcon X101 goes to 2-1/4 inch.
11) What looks like a substitute for the Sure-Loc Durango Square Knob but will not work as a complete lockset?
Watch for trim-only and exit device parts. The Sargent 28C-KNOB is exit device trim with a knob and rose for 1-3/4 inch doors, the Sargent 78-2875 is an outside knob only with B design, and the Imperial USA ED-BKL580 is knob trim in storeroom function from the ED-500 series. Emtek Porcelain Knobs ship as two knobs with a threaded rod. Each of those is trim or a knob pair, not a bored lockset with latch and strike the way the Durango Square Knob is supplied in Dummy, Passage, Privacy and Entry.
12) Is there a graded knobset that still fits standard residential door prep like the Sure-Loc Durango Square Knob?
Yes. The Dexter C2000 Series is Grade 2 across Passage, Privacy, Entry/Office and Classroom functions, all fitting doors 1-3/8 inch to 1-3/4 inch, the same door thickness range the Durango Square Knob covers. The Arrow MK01 and RK01 are Grade 2 passage knob locks in the same 1-3/8 inch to 1-3/4 inch range. These give you an ANSI grade on the submittal while staying in standard bored prep, where the Durango is specified as a residential knobset.
13) What finishes does the Sure-Loc Durango Square Knob come in, and will they match the rest of the Durango line?
Two: 15 Satin Nickel and FBL Flat Black. Both are offered across all four functions, so you can run the same finish on dummy, passage, privacy and entry doors, and they coordinate with the other Durango trim.
14) What else could I buy instead of the Sure-Loc Durango Square Knob in satin nickel?
If you want a comparable residential knob in satin nickel, the Callan Roland is a Grade 2 entrance knobset supplied in US15 Satin Nickel. For a keyed entry knob at a lighter grade, the Kwikset 400P-CP Polo is Grade 3 and fits 1-3/8 to 1-3/4 inch doors, the same range the Durango covers. The Durango's advantage over those is the square knob profile and the matching black option.
15) Is a dummy knob from another brand interchangeable with the Sure-Loc Durango Square Knob dummy?
Dummy trim is surface-applied with no latch, so brands are not mechanically tied to each other, but they are not visually interchangeable. The Durango dummy is a hollow formed brass mushroom-shaped knob in Satin Nickel or Flat Black. Alternatives include the Schlage A170 Grade 2 single dummy trim, the BEST 6K Series Grade 2 medium duty single dummy trim, the Cal-Royal BA40 Barrington dummy knob, and the Bravura Biloxi Grade 2 dummy knobset with round trim. If the other doors in the run carry Durango knobs, matching the Durango dummy keeps the rose and knob profile consistent.
16) I want a Satin Nickel entry knob to match the Sure-Loc Durango Square Knob finish on a door I cannot get the Durango for. What else comes in Satin Nickel?
The Callan Roland is a Grade 2 entrance knobset in US15 Satin Nickel, and the Bravura Dallas with rectangle trim passage knobset is a Grade 2 knobset offered in US4 Satin Brass if you are matching a warmer tone instead. The Durango Square Knob's 15 Satin Nickel is the same standard US15 designation, so the Callan Roland will read as a close finish match on an adjacent door even though the knob shape differs from the Durango's squared mushroom profile.
17) What is a decorative alternative to the Sure-Loc Durango Square Knob for a higher-end interior?
For a more ornamental interior, Baldwin Estate and Omnia knobs are solid brass traditional shapes: the Baldwin 5011 Colonial passage knob with 5058 rose, the Baldwin 5000 Baltimore 2 inch knob passage and privacy sets with a 2-3/8 inch backset and full lip strike, and the Omnia 434/PA egg-shaped knob latchset in solid brass with a 3 inch projection. The Durango Square Knob is a hollow formed brass knob in Satin Nickel and Flat Black that coordinates with the rest of the Sure-Loc Durango line, which is the practical pick when you are standardizing a whole unit rather than dressing a single feature door.
18) I need a bathroom privacy knob instead of the Sure-Loc Durango Square Knob. What are the options?
Privacy substitutes include the Cal-Royal BER20 Grade 3 privacy knob lock with brass trim for doors 1-3/8 inch to 1-3/4 inch, the Dexter C2000 Grade 2 privacy ball knob for the same door range, the Pamex FTF10 Grade 3 Baron privacy knob, and the Baldwin Estate 5077 Bethpage privacy knob with R027 rose. The Durango Square Knob is also built in Privacy in Satin Nickel and Flat Black if you want the squared knob profile to match the other doors.
19) What is the Sure-Loc Durango knob made of?
The knob is formed brass, hollow and mushroom-shaped behind the square face, with brass listed as both the material and the substrate. That is typical residential-weight construction rather than the solid brass castings you get on a decorative line like Omnia.
20) Does the Durango Dummy knob come as a pair or a single knob?
The Durango Dummy is a knob function with no latch, used where you only need something to pull on. If you need both faces of a door trimmed, order accordingly. By contrast the Emtek Arts and Crafts Hammered Egg dummy is sold as a pair, and the Schlage A170 is a single dummy trim.
How fast can I get the Sure-Loc DU100-SQ 15 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 Sure-Loc DU100-SQ 15 come with a warranty?
Absolutely. The Sure-Loc DU100-SQ 15 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 Sure-Loc DU100-SQ 15?
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 Sure-Loc DU100-SQ 15 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.