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Best 45H Mortise Locks
dormakaba BEST's Grade 1 commercial mortise lock built around Small Format Interchangeable Core (SFIC) keying — the fastest rekey platform in commercial hardware. ANSI A156.13 Grade 1 Operation and Strength, Grade 2 Security (upgradeable to Grade 1 with drill-resistant core).
Parent company: dormakaba (BEST Access Systems)
About Best 45H
The Best 45H Series is dormakaba BEST's Grade 1 commercial mortise lock, engineered around the Small Format Interchangeable Core (SFIC) key system that made BEST the standard for facilities management rekeying. Every 45H ships with a 7-pin SFIC housing that accepts any BEST or BEST-compatible core. When you need to rekey a door — turnover in a multi-family unit, staff change at a facility, lost-key situation — you pull the old core in 30 seconds using a control key, drop in a new pre-pinned core, and you're done. No disassembly, no locksmith callout, no downtime.
BEST pioneered SFIC, and the 45H remains the most widely-specified SFIC-housing mortise lock in multi-tenant, educational, healthcare, and government facilities. The 45H is ANSI/BHMA A156.13 Series 1000 Grade 1 Operational and Strength certified, Grade 2 Security. To meet Grade 1 Security, specify a drill-resistant core (BEST 1CD, 1CDP, 1CDF, or 1CDX) with escutcheon trim, or a 1E7K4 high-security cylinder with sectional trim. The 45H is also UL listed for 3-hour A-label fire doors.
What sets the 45H apart for commercial facility managers is total cost of ownership. The upfront purchase is competitive with other Grade 1 mortise brands, but ongoing rekey costs are dramatically lower because facility staff (not a locksmith) can handle routine rekeys. For a 200-door university dormitory that turns over annually, the labor savings over 5 years can exceed the hardware cost. The 45H is also available with lead-lined (LL) construction for radiology and imaging suite doors, and security head screws (SH) for abuse-prone openings. Key-En-Lock services the full 45H lineup across Brevard County, stocks the most-specified functions on the truck, and trains facility staff on SFIC core removal.
Best 45H Functions & Models We Service
Every mortise lock function corresponds to a specific door-use scenario — storeroom doors stay locked from outside, classrooms unlock from inside only, privacy functions need emergency release. Below is the function lineup we stock parts for and service across Brevard County.
| Model | Function Name | ANSI | Description |
|---|---|---|---|
| 45H7N | Passage Latch | F01 | Latchbolt by lever either side at all times. Interior corridors and conference rooms. |
| 45H7L | Privacy Bed/Bath | F22 | Inside thumbturn locks; emergency small-tool release outside. Single-occupancy restrooms, hotel rooms. |
| 45H7LT | Privacy w/ Indicator | F19 | 45H7L with exterior indicator window (Vacant/Occupied). |
| 45H7A | Office | F04 | Outside lever key-locked; inside always free. Standard office entry function. |
| 45H7AB | Office with Button | F04 | 45H7A with inside button to lock outside without key. Dentist offices, small retail. |
| 45H7AT | Office with Indicator | F04 | 45H7A with exterior occupancy indicator. Healthcare exam rooms. |
| 45H7D | Storeroom | F07 | Outside lever always locked; key only retracts. Inside always free. Server rooms, records, utility. |
| 45H7TD | Storeroom w/ Deadbolt | F14 | Storeroom + 1" deadbolt. High-security storage — IT, DEA-controlled drugs, weapons. |
| 45H7R | Classroom | F05 | Outside key locks/unlocks; inside always free. Pre-2015 classroom spec. |
| 45H7T | Dormitory | F20 | Key throws deadbolt and locks outside lever; inside retracts both in one motion. |
| 45H7H | Hotel | F31 | Hotel-specific — privacy deadbolt blocks emergency key; includes visual indicator. Double-cylinder. |
| 45H7HJ | Hotel Janitorial | F31 | Hotel with housekeeping override — separate janitorial cylinder accepts master only. |
| 45H7C | Dormitory (Double Cyl) | F13 | Double-cylinder dormitory function. Key both sides for throw-through door applications. |
| 45H7G | Institutional | F30 | Double-cylinder both sides key-locked. High-security interior utility. |
| 45H7IND | Intruder (Classroom Security) | F32 | Classroom security — deadlocking auxiliary latchbolt prevents shim attack. Current K-12 spec. |
| 45H7INL | Intruder w/ Indicator | F32 | 45H7IND + exterior occupancy indicator window. |
| 45H7INA | Intruder (Alt Function) | F32 | Alternate intruder function — inside-lockable outside lever. |
| 45H7S | Storeroom (Visual Indicator) | F07 | 45H7D with visual indicator. Monitored storage. |
| 45H7TA | Dormitory (Alt) | F20 | Alternate dormitory function. |
| 45H0L(EU) | Electrified Fail-Secure | F04 | Power unlocks outside lever; power loss locks. Standard card-reader entry. 12V or 24V DC. |
| 45H0L(EL) | Electrified Fail-Safe | F04 | Power locks; power loss unlocks. Stairwell reentry (IBC 1010.1.9.12), fire corridor doors. |
ANSI F-Function Quick Reference
ANSI A156.13 standardizes mortise lock functions so specifications are portable across brands. When an architect specs "F04 entry/office," any Grade 1 mortise lock from any of the brands on this page will meet that function — you're just picking the brand based on warranty, keyway, and parts availability.
| ANSI | Function |
|---|---|
| F01 | Passage — no locking |
| F04 | Office — key locks outside lever |
| F05 | Classroom — key outside, inside free |
| F07 | Storeroom — outside always locked except by key |
| F13 | Dormitory — double cylinder + deadbolt |
| F14 | Storeroom with Deadbolt |
| F19 | Privacy with Indicator |
| F20 | Dormitory/Corridor — key + deadbolt |
| F22 | Privacy — inside thumbturn |
| F30 | Institutional — double cylinder both sides |
| F31 | Hotel — privacy deadbolt + indicator |
| F32 | Classroom Security — deadlocking intruder latchbolt |
Best 45H Trim Options
Lever & Knob Designs
| Code | Design | Notes |
|---|---|---|
| 3 | 3 Solid Tube w/ Return | Standard curved lever with return to door. Most-specified design. |
| 12 | 12 Solid Tube, No Return | Straight lever without return. Contemporary look; NOT California Title 19/24 compliant. |
| 14 | 14 Curved Return | Curved lever with return — California Building Code Title 19 & 24 compliant. Required spec in some jurisdictions. |
| 15 | 15 Contour/Angle Return | Angled return lever, ADA-friendly grip. Common commercial spec. |
| 16 | 16 Curved, No Return | Curved lever without return — contemporary aesthetic, non-California. |
| 17 | 17 Gull Wing | Handed gull-wing lever; specify handing when ordering. |
| 4 | 4 Round Knob | Pre-ADA retrofit only. Heavy-duty round knob. |
Rose & Escutcheon Styles
| Code | Style | Notes |
|---|---|---|
| H | H Trim (2-3/4" dia) | Standard round rose. Most-specified BEST trim for general commercial. |
| R | R Trim (2-3/4" dia) | Round rose variant. |
| S | S Trim (3-1/2" dia) | Larger round rose. |
| J | J Wrought | Wrought escutcheon plate — traditional heavy-duty commercial. |
| M | M Forged | Forged escutcheon plate — heaviest BEST trim option. |
| N | N Forged (concealed cyl) | Forged escutcheon with concealed cylinder — vandal-resistant, Grade 1 Security when paired with 1E7K4 cylinder. |
Finishes
BHMA-coded architectural finishes. We stock the most-specified finishes (626 satin chrome, 630 satin stainless, 605 bright brass, 612 satin bronze) for fast in-field matching.
Keying & Cylinders
- SFIC (Small Format Interchangeable Core) — Standard 7-pin BEST SFIC housing. Any BEST or BEST-compatible core fits. Core swap takes 30 seconds per door.
- A2 Keyway (standard) — Standard BEST A2 keyway — widely available blanks for master keying.
- A3 / A4 / CC / D Keyways — Additional BEST keyways for sectional master keying across multi-building portfolios.
- Peaks® High Security — dormakaba BEST patented high-security keyway — factory-dealer-restricted blanks. UL437 equivalent protection.
- Peaks Classic Plus — Mid-tier patented Peaks keyway. Used for master key control without full UL437 upgrade cost.
- 1CD / 1CDP / 1CDF / 1CDX cores — Drill-resistant cores required to upgrade 45H from Grade 2 to Grade 1 Security with escutcheon trim.
- 1E7K4 High-Security Cylinder — Required for Grade 1 Security when using sectional trim (H, R, S trim).
- LFIC (Large Format) — Large-Format IC housing variant for 7-pin LFIC cores. Used when standardizing on LFIC across a building portfolio.
- Construction cores — Temporary construction cores disable automatically when final core is inserted — prevents post-construction unauthorized access.
Electrified & Access Control Variants
Modern commercial buildings tie mortise locks into card readers, mobile credentials, and access control panels. Best 45H offers a full electrified lineup for card-reader exits, stairwell reentry (IBC 1010.1.9.12), and fail-safe vs fail-secure configurations.
- 45H0L(EU) — Fail-secure: Power unlocks outside lever; power loss keeps locked. Standard card-reader entry. 12V or 24V DC.
- 45H0L(EL) — Fail-safe: Power locks outside lever; power loss unlocks. Required for stairwell reentry (IBC 1010.1.9.12) and fire corridor doors.
- RX (Request-to-Exit): Built-in microswitch signals access control when inside lever operated — logs egress events.
- LX (Latchbolt Monitor): Senses latchbolt position. Confirms door actually latched closed — required for DEA-controlled pharmacy and secured lab doors.
- Voltage options: 12V DC or 24V DC. Surge-protected solenoid driver.
- Wiegand reader integration: Compatible with standard Wiegand access control; pairs with dormakaba readers or any 26/34-bit Wiegand panel.
- SFIC electrified: Electrified 45H variants retain SFIC core housing — facility staff can still rekey electrified doors via core swap.
Fire Rating & Code Compliance
- UL Listed for fire-rated doors up to 3 hours A-label.
- Field-reversible latchbolt handing retains fire rating per BEST certification.
- Fire-rated installs use standard ANSI strike with dust box.
- Electrified variants retain UL fire rating when wired per BEST spec.
- SFIC core variants retain UL fire rating when Grade 1 cores are used.
- Florida Building Code accepts UL 10C labeled mortise locks on A-label fire doors — verify label during annual NFPA 80 inspection.
- 47H variant (a related BEST mortise lock with integrated UL437 cylinder) offers Grade 1 Operational, Strength, AND Security certification out of the box.
Common Best 45H Repairs We Service
After 25+ years of commercial locksmith work in Brevard County, these are the failure modes we see most often on Best 45H mortise locks. All are truck-serviceable — we don't need to take the door off its hinges.
- SFIC core stuck in housing — control key bent or worn, or core pin seized. On-site core extraction and housing service.
- Lever sag / return spring failure — internal return spring wear after 5-10 years heavy use. Spring kit replacement without door removal.
- Key won't turn in SFIC core — wafers worn or keyway clogged with debris. Rekey the core or swap to a new pre-pinned core in 30 seconds.
- Latchbolt binding / not retracting — drive cam wear or lever hub slip. Lockbody rebuild with BEST OEM kit.
- Deadbolt stuck extended (45H7TD) — door/frame sag misaligning strike. Re-shim strike, adjust hinges, or replace bent bolt.
- 45H7IND classroom security latchbolt bent — after forced-entry attempt. Replace auxiliary deadlocking assembly.
- Electrified 45H0L not releasing — solenoid failure, voltage drop from long wire run. Test voltage, replace solenoid or full electrified lockbody.
- Core rekey service — on-site re-pinning of SFIC cores to new key codes. For master-keyed buildings we re-pin the full master system. See our lock rekeying service for pricing.
- Peaks patented keyway rekey — we are a factory-authorized dormakaba dealer; handle Peaks rekeys in Brevard County.
- Upgrade to drill-resistant core (1CD/1CDP/1CDF/1CDX) — swap standard core for drill-resistant to meet Grade 1 Security without replacing the lockbody.
- Facility staff training on SFIC core swap — we train in-house maintenance staff to handle routine rekeys (checkouts, turnover, lost keys) with control key, eliminating ongoing locksmith costs.
Need Best 45H Service in Brevard County?
Licensed, insured, 25+ years of commercial mortise lock experience. We stock parts on the truck.
Call (321) 224-5625Frequently Asked Questions
What does "SFIC" mean and why does it matter?
SFIC = Small Format Interchangeable Core. The lock housing accepts a figure-8-shaped removable core held in place by a "control key." When you insert the control key and turn, it retracts a retainer pin so the core slides out. Drop in a new pre-pinned core and the door is rekeyed in 30 seconds — no locksmith, no disassembly, no downtime. For facilities with frequent tenant turnover (multi-family, dormitories, hotels), staff rotations (government, healthcare), or lost-key situations, SFIC is the fastest and most cost-effective rekey platform in commercial hardware. BEST invented SFIC; other brands (Schlage, Corbin Russwin, Sargent) offer SFIC-compatible housings.
Is the Best 45H really only Grade 2 Security?
With a standard core, yes — ANSI A156.13 classifies the 45H as Grade 2 Security (Grade 1 Operational and Strength). To achieve Grade 1 Security, specify a drill-resistant core (1CD, 1CDP, 1CDF, or 1CDX) with escutcheon trim, OR a 1E7K4 high-security cylinder with sectional trim. With those upgrades, the 45H is fully Grade 1. If you want Grade 1 Security out-of-the-box, BEST also makes the 47H, which includes UL437 high-security cylinder as standard and is Grade 1 Operational/Strength/Security certified without any core upgrade.
How does Best 45H compare to Schlage L9000 and Sargent 8200?
The 45H wins on rekey economics — SFIC lets facility staff handle rekeys without a locksmith, which dramatically reduces total cost of ownership for high-turnover facilities. Schlage L9000 wins on key control depth (Primus XP geographic exclusivity) and lever variety. Sargent 8200 wins on chassis durability. For a university dormitory that rekeys 200+ doors annually at semester turnover, 45H is the clear choice — labor savings alone over 5 years pay for the hardware. For high-security government or IP-protection environments where blank restriction matters more than rekey speed, L9000 Primus XP or Sargent KESO is the better spec.
Can I train my maintenance staff to do SFIC core swaps?
Yes — that's the point of SFIC. We offer on-site training where your facility maintenance team learns to: pull cores using control key, identify core pinning, handle lost-core scenarios, and manage your master key control system. Typical training is 2-3 hours for a team of 3-5 staff. After training, staff can handle all routine rekeys; we handle the pinning of new cores and the master key system design. For a facility with 100+ doors, this saves thousands of dollars annually in locksmith callout fees.
What is the difference between SFIC and LFIC?
SFIC (Small Format) is the BEST figure-8 format — smaller core, fits into standard SFIC housings across multiple brands (BEST, Schlage, Sargent, etc.). LFIC (Large Format) is a larger proprietary interchangeable core format — Schlage has their LFIC, Corbin Russwin has theirs, each incompatible with the other brands. SFIC is the industry-standard cross-brand core format. If you want flexibility to change lock brands in the future without rekeying the entire facility, specify SFIC housings.
Is Best 45H fire-rated for schools and hospitals?
Yes — UL Listed for 3-hour A-label fire doors. Also UL Listed for 1-1/2-hour fire doors up to 4' wide x 9' tall with 3/4" latch throw. For educational and healthcare facilities where fire door compliance is regularly inspected (NFPA 80 annual inspection), the 45H is a strong spec. If the door is already prepped for a different mortise brand, the 45H typically retrofits with minor front-plate adjustment.
How does the 45H7IND compare to Schlage L9071 and Sargent 8238 for classroom security?
All three are F32 classroom security functions with deadlocking auxiliary latchbolts — functionally interchangeable. The 45H7IND has the SFIC rekey advantage; if a classroom master key is lost, you swap cores across the affected doors in minutes rather than calling a locksmith. The Schlage L9071 has deeper key control via Primus XP if that matters. The Sargent 8238 has heavier chassis durability. For active-shooter-response retrofits in Florida K-12, any of the three meets updated school safety guidance. Pick based on which keyway already exists in your district.
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