Will a smart lock fit my door? It may—if the exact lock model matches your door type, existing holes, latch preparation, and nearby clearance. Before buying a Lockin Veno deadbolt, measure the door thickness, crossbore (face bore), backset, edge bore, latch pocket, and the space around the lock. Then compare those numbers with the current guide for the exact model you want.
Many US homes use common deadbolt dimensions, but “standard door” is only a starting point. A door can have the right thickness and still be unsuitable because it has a mortise or multipoint lock, an incompatible latch opening, a close handle, a storm door, or another obstruction. Measuring first takes a few minutes and can prevent a much longer installation surprise.
Quick fit screen: is your door a likely candidate?
Your door is a stronger candidate for a Lockin Veno deadbolt when all of the following are true:
- It uses a bored, single-cylinder deadbolt—not a mortise, multipoint, interconnected, or narrow-stile lock.
- The door slab is 1-3/8 to about 2-11/64 in (35–55 mm) thick.
- The crossbore is a size supported by your exact model.
- The backset is 2-3/8 or 2-3/4 in (60 or 70 mm).
- The edge bore is 1 in (25.4 mm).
- The latch has the rectangular faceplate preparation shown in the model guide.
- The deadbolt throws and retracts smoothly without pushing, pulling, or lifting the door.
- Handles, trim, glass, the door stop, and any second door leave enough room for the lock.
Passing this screen does not guarantee fit. Use it to narrow your options, then check the current quick-start guide and product page for one exact model.
Before you measure a door for a smart lock
Gather a tape measure, a ruler or caliper, a pencil, and your phone. Keep the door open while measuring so you can see the face, edge, frame, and existing hardware. Record both inches and millimeters if possible; Lockin’s current fit information uses both.
If you are not sure what kind of lock is already installed, start with this guide to deadbolt parts and types. Do not remove or drill hardware on a labeled fire door, shared exit door, rental door, or institutional door just to expose a measurement. Those doors need the appropriate owner, facilities team, or qualified door professional involved first.
Take five photos before you begin:
- The outside face of the closed door.
- The inside face of the closed door.
- The door edge and latch faceplate with the door open.
- The strike and surrounding frame.
- Any handle, trim, glass, door stop, or storm door close to the deadbolt.
Those photos make a support review much easier if one number is borderline.
1. Measure the smart lock door thickness
Open the door and measure straight across the door slab at the deadbolt height. Do not include raised trim, weatherstripping, or a decorative plate. If the door edge is beveled, keep the tape perpendicular to the broad faces rather than following the slant.
The current fit information for the Veno deadbolts in this guide lists a door-thickness range of 1-3/8 to about 2-11/64 in (35–55 mm). If your smart lock door thickness falls outside that range, stop. Longer screws, improvised spacers, or extra drilling should not be assumed to make the installation compatible.
Also note the material. Current Veno Pro and Veno Plus product guidance specifies a wooden door. A metal, fiberglass, glass, or unusually constructed door needs a model-specific review rather than a guess based only on thickness.
2. Measure the crossbore, or face-bore diameter
The crossbore—also called the face bore—is the large round opening through the broad face of the door. If the existing lock is still installed, measure the round trim carefully or check the original lock documentation; the most reliable diameter measurement is taken across the exposed hole after authorized removal.
The two common sizes in current Veno documentation are:
- 1-1/2 in (38 mm)
- 2-1/8 in (54 mm)
The smart lock bore size is model-specific. Current documentation supports 2-1/8 in (54 mm) for Veno and 1-1/2 or 2-1/8 in (38 or 54 mm) for Veno Go and the two Veno Solar models.
There is one important exception to resolve before purchase: the current Veno Pro and Veno Plus product pages specify a 2-1/8 in (54 mm) crossbore, while the quick-start guides linked from Lockin’s current guide page show 1-1/2 or 2-1/8 in (38 or 54 mm). Because both sources agree on 54 mm, a 54 mm bore can move to the remaining checks. If your bore is 38 mm and you are considering Pro or Plus, contact Lockin Support with the exact model, measurements, and photos. Do not enlarge the hole or place the order based on one conflicting line of documentation.
3. Measure the deadbolt backset
The backset is the distance from the door edge to the center of the crossbore. It is not the distance to the near edge of the hole.
To measure a deadbolt backset for a smart lock:
- Mark the vertical centerline of the crossbore.
- Place the end of the tape against the door edge—not the trim or door stop.
- Measure straight to that centerline.
Current Veno fit information lists 2-3/8 in (60 mm) and 2-3/4 in (70 mm) backsets. If your measurement is between those values, check whether you measured to the center. If it is genuinely different, stop for a professional or Lockin review instead of assuming the latch will adjust.
4. Check the edge bore, latch faceplate, and pocket depth
The edge bore is the smaller hole drilled into the door edge for the deadbolt latch. Current Veno fit information lists a 1 in (25.4 mm) edge bore.
Now inspect the latch preparation around that hole. Current Veno diagrams show a rectangular latch faceplate recessed flush into the door edge. A plain round opening with no rectangular recess—or a rounded drive-in latch—should be treated as a stop condition until the exact model guide or support confirms a solution. Converting the preparation can require carpentry and may not be appropriate for every door.
For Veno Pro and Veno Plus, the current product guidance also lists a latch-box depth of at least 1 in (25.4 mm). Measure the pocket available behind the edge bore and look for screws, glass, reinforcements, or other obstructions inside the door.
Finally, close the door gently and test the existing bolt. It should extend into the strike without needing you to lean on, pull, or lift the door. A motorized smart lock should not be expected to fix a tight strike, sagging hinge, swollen door, or misaligned frame. Correct the alignment before installing the smart lock.
5. Measure handle and trim clearance
Measure from the center of the crossbore to the closest point of the handle, escutcheon, decorative trim, glass frame, or other hardware. Check both sides of the door. Also imagine the space needed to grip the handle and remove the interior battery cover after installation.
Current model diagrams provide these useful prescreens:
- Veno: at least 3 in (75 mm) from the crossbore center to the handle.
- Veno Go: at least 2 in (50 mm) from the crossbore center to the handle.
- Veno Solar Palm and Veno Solar Face: at least 2 in (50 mm) from the crossbore center to the handle.
For Veno Pro and Veno Plus, the current product guidance lists 3 in (75 mm) between the handle and crossbore center when planning the exterior solar-panel accessory. That accessory condition is not a universal substitute for checking the lock body itself. Compare the whole door layout with the exact product images and installation guide.
6. Check the door stop, frame, and second-door clearance
Open and close the door slowly while watching the deadbolt area. A smart lock needs clearance when the door swings and when it sits in the frame.
Check these points:
- The exterior assembly does not collide with the door stop, screen, storm door, or nearby wall.
- The interior assembly clears trim, blinds, curtains, and handles.
- The latch enters the strike straight and has enough depth behind it.
- Weatherstripping does not force the door out of alignment.
- A glass insert or metal reinforcement does not occupy the drilling area.
Current Veno Solar specifications add another measurement: more than 1-9/16 in (40 mm) from the crossbore center to the door stop. The Solar models also need the exterior panel to receive usable light for solar charging; light availability is separate from physical fit.
Lockin Veno fit measurements by model
Use this table as a prescreen, not as permission to modify a door. Specifications were checked against current Lockin product pages and linked guides on September 5, 2026 and may change.
| Model | Door thickness | Crossbore | Backset | Edge bore | Additional fit checks |
|---|---|---|---|---|---|
| Veno | 35–55 mm | 54 mm | 60 or 70 mm | 25.4 mm | 75 mm handle clearance; single-cylinder deadbolt and rectangular latch preparation shown. |
| Veno Go | 35–55 mm | 38 or 54 mm | 60 or 70 mm | 25.4 mm | 50 mm handle clearance; single-cylinder deadbolt and rectangular latch preparation shown. |
| Veno Solar Palm / Veno Solar Face | 35–55 mm | 38 or 54 mm | 60 or 70 mm | 25.4 mm | 50 mm handle clearance; more than 40 mm to door stop; French doors listed as incompatible. |
| Veno Pro | 35–55 mm; wooden door | 54 mm is the confirmed overlap | 60 or 70 mm | 25.4 mm | Product page says 54 mm; linked guide shows 38/54 mm. For a 38 mm bore, stop and ask support. Mortise locks and storm-door setups are listed as incompatible. |
| Veno Plus | 35–55 mm; wooden door | 54 mm is the confirmed overlap | 60 or 70 mm | 25.4 mm | Product page says 54 mm; linked guide shows 38/54 mm. For a 38 mm bore, stop and ask support. Mortise locks and storm-door setups are listed as incompatible. |
The interior assembly of each model belongs in a protected indoor environment. Do not apply an exterior weather-resistance rating to the inside unit or to an entry where both sides are outdoors.
Stop and get a model-specific review for these doors
Some conditions cannot be cleared by a tape measure alone.
Mortise, multipoint, interconnected, and narrow-stile locks
These systems do not use the same bored-deadbolt preparation shown in Veno fit diagrams. Do not assume a Veno deadbolt can replace only one visible part of an integrated mechanism. Ask a qualified door professional to identify the hardware before purchase.
French doors
Current Veno Solar Palm and Veno Solar Face pages list French doors as incompatible. For another Veno model, the active leaf, inactive leaf, astragal, surface bolts, and strike arrangement still require review. Matching backset and thickness alone is not enough.
Storm or screen doors
Current Veno Pro and Veno Plus guidance lists storm doors as incompatible because a second door may block the camera. For a non-video model, a storm or screen door can still collide with the exterior assembly. Measure the closed gap and swing path, then ask support if clearance is close.
Fire-rated, labeled, shared-egress, and institutional doors
Do not drill, enlarge holes, substitute hardware, or change the latch on a fire-rated or labeled opening without the responsible owner or facilities team and qualified code/listing review. Door hardware is part of the opening’s tested and approved system, and modifications may require a formal field evaluation. The same caution applies to shared exits and doors subject to accessibility, egress, school, workplace, or multifamily requirements. This guide does not establish code compliance or fire-door suitability for any Veno model.
Metal, fiberglass, glass, gates, and unusual outdoor entries
Material, internal reinforcement, glass location, weather exposure, and power or radio conditions can change the installation. Send support photos of both faces, the edge, and the frame. Keep every interior assembly protected indoors.
Rental, HOA, and managed-property doors
Physical compatibility does not replace permission. Check the lease, building rules, and any landlord, property manager, or HOA requirements before removing or modifying the existing lock. Keep the original hardware if restoration may be required.
What “no drilling” means
The current Veno Go page says it fits most standard US doors with no drilling required. That means an existing door preparation that already matches the model—not every door with no changes.
If you need to enlarge the crossbore, deepen the latch pocket, cut a faceplate recess, relocate a handle, or replace a mortise or multipoint mechanism, the job is no longer the simple retrofit described by “no drilling.” Pause before changing the door, especially if it is rented, labeled, glazed, metal-reinforced, or part of a managed building.
Printable smart-lock measurement card
Copy or print this list and complete it at the door:
DOOR AND LOCK
Door material: ______________________________
Current lock type: ___________________________
Door thickness: ______ in / ______ mm
Crossbore diameter: ______ in / ______ mm
Backset (edge to bore center): ______ in / ______ mm
Edge-bore diameter: ______ in / ______ mm
Latch-pocket depth: ______ in / ______ mm
Latch faceplate: [ ] rectangular [ ] round/drive-in [ ] unsure
Bolt moves freely with door closed: [ ] yes [ ] no
CLEARANCE AND CONDITIONS
Crossbore center to handle/trim: ______ in / ______ mm
Crossbore center to door stop: ______ in / ______ mm
Storm or screen door: [ ] yes [ ] no
French-door pair: [ ] yes [ ] no
Fire/labeled/shared-egress door: [ ] yes [ ] no [ ] unsure
Rental/managed-property permission needed: [ ] yes [ ] no [ ] unsure
Interior assembly will be protected indoors: [ ] yes [ ] no
MODEL CHECK
Exact model: _________________________________
Product page checked on: _____________________
Quick-start guide/manual checked on: __________
Photos ready for support: [ ] outside [ ] inside [ ] edge [ ] frame [ ] obstructions
Choose the model only after the measurements
Once the card is complete:
- Use the Lockin Smart Lock Selector to narrow the family by access method and household needs.
- Open the current product page for that exact model.
- Compare your measurements with its quick-start guide and user manual.
- Review the Lockin FAQ for installation and ownership questions.
- If any measurement is borderline, any source disagrees, or the door appears in a stop branch above, contact support with your measurements and photos before ordering or drilling.
Frequently asked questions
Will a smart lock fit every door?
No. Fit depends on the exact model, lock type, door material and thickness, crossbore, backset, edge bore, latch preparation, alignment, and surrounding clearance. Mortise, multipoint, narrow-stile, French, storm, labeled fire, and other nonstandard openings may need model-specific or professional review.
How do I measure backset for a smart lock?
Measure from the door edge to the center of the crossbore. Current Veno fit information lists 2-3/8 in (60 mm) and 2-3/4 in (70 mm) backsets. Do not measure only to the near edge of the hole.
What smart lock bore size do I need?
It depends on the model. Current Veno documentation shows a 2-1/8 in (54 mm) crossbore; Veno Go and the Veno Solar models show 1-1/2 or 2-1/8 in (38 or 54 mm). Veno Pro and Veno Plus sources currently disagree about 38 mm, so owners of a 38 mm bore should confirm the exact model with Lockin Support before buying or drilling.
Can I install a smart lock without drilling?
Possibly, if the current preparation already matches the exact model. “No drilling” does not cover an incompatible bore, latch, handle layout, mortise lock, or door that needs structural changes.
Can Veno Pro or Veno Plus go behind a storm door?
Current product guidance lists storm-door setups as incompatible with Veno Pro and Veno Plus because the second door may block the camera. A storm or screen door can also create a physical-clearance problem for other models.
Can I put a smart lock on a fire-rated door?
Do not modify a fire-rated or labeled opening based on a consumer fit guide. Have the responsible owner or facilities team confirm the door, listed hardware, approvals, and any required professional or authority review before changing it.
Measure first, confirm the exact model second
The best answer to will a smart lock fit my door comes from one complete set of measurements and one current, exact-model guide. Record the door thickness, smart lock bore size, deadbolt backset, edge bore, latch preparation, and clearance. Then use the Smart Lock Selector and compare your notes with the chosen model’s current documentation. If the numbers or door type do not line up cleanly, send the photos and measurements to support instead of guessing.