STI KIT-71100A-W White Back Box Kit for Stopper Station
Overview
The KIT-71100A-W is a white back box assembly kit designed to solve the retrofit mounting problem when installing STI Stopper® Station request-to-exit buttons and access control faceplates on finished wall surfaces. Rated for 9VDC operation with electronic strike hardware, this enclosure provides concealed mounting and organized cable management without exposing wiring or hardware. Use this kit when you need factory-engineered structural support during new construction or system upgrades where drywall integration and cable routing matter for both aesthetics and safety.
Key Features
- 9VDC Electronic Strike Compatibility: Designed for 9VDC strike mechanisms integrated into Stopper-series systems — the standard voltage for networked electronic access control deployments. Ensures reliable strike energization without over-voltage or power supply conflicts.
- White Powder-Coat Finish: Factory finish maintains professional appearance on light-colored walls and blends into standard office or commercial interiors. Resistant to fingerprints and minor scuffs common in high-traffic entry points.
- Organized Cable Management: Gasket-slot design accommodates twisted pair, conduit, or direct-wired configurations — critical for maintaining environmental sealing and reducing cable pinch points during installation. Keeps wiring topology clean and traceable for future maintenance.
- Drywall and Block Mounting: Includes wall fixings and mounting template. Four-point fastening design distributes load evenly when securing to drywall studs or concrete block — prevents hardware sag or misalignment under strike solenoid load.
- Spacer Inserts for Unused Ports: Blank-off provisions for cable entry holes not in use — maintains weatherproofing and eliminates unsightly gaps on surface-mounted installations. Important detail in cleanroom or food-service environments where dust ingress control matters.
- Stopper® Station and Universal Button Support: Engineered to accommodate both STI Stopper Station faceplates and universal button configurations. Verify your specific strike mechanism and button size before ordering to confirm cable entry port alignment with your wiring topology.
Integration and Compatibility
The KIT-71100A-W integrates with STI Stopper® Station systems and 9VDC-rated strike hardware in networked TCP/IP electronic access control deployments. Confirm compatibility with your specific strike mechanism, button assembly, and cable routing before installation. If deploying Stopper II or Weather Stopper II protective covers alongside this back box, verify clearance and support structure between the back box mounting surface and the protective cover assembly to avoid mechanical binding. The kit supports both hardwired and networked credential readers used in standard door access control — test all 9VDC wiring terminations before closing the enclosure.
What's in the Box
- 1x White back box frame assembly
- 1x Mounting template
- 4x Wall fixings
- 2x Cable gasket inserts
- 4x Spacer inserts for blank-off of unused cable entry ports
Frequently Asked Questions
Q: Can I use the KIT-71100A-W with non-STI Stopper button assemblies?
A: The kit is designed for STI Stopper® Station and universal button configurations in Stopper-series installations. Before ordering, verify that your specific button size and cable entry requirements match this kit's port configuration. Mixing manufacturer hardware may result in faceplate misalignment or cable routing conflicts.
Q: What drill bit size is required for masonry installation?
A: Use a 7mm masonry bit when drilling into concrete or block wall surfaces. The mounting template supplied in the kit marks the four fixing hole locations — position it centrally over your target installation point before drilling.
Q: Is the KIT-71100A-W weather-resistant for outdoor door installations?
A: This kit is designed for interior drywall and finished wall mounting. For outdoor or exposed installation, consult STI's Weather Stopper II protective cover options to verify compatibility with this back box assembly.
Q: What voltage does the 9VDC rating mean for my strike hardware?
A: The 9VDC specification indicates the enclosure and integrated wiring supports 9-volt DC electronic strike mechanisms — the industry standard for access control solenoid locks. Verify your strike hardware is rated for 9VDC before integration to avoid power supply mismatch or hardware failure.
Q: Can unused cable entry ports be left open?
A: No. The spacer inserts supplied in the kit must blank off any unused cable entry holes to maintain environmental sealing and prevent dust or debris ingress. Unsealed ports degrade cable protection and enclosure integrity.
Q: Does the kit include cable conduit or wiring harness?
A: The KIT-71100A-W provides mounting structure, gaskets, and cable routing slots only. You supply the 9VDC twisted pair, conduit, or direct-wire configuration to match your access control topology. Select the appropriate cable gasket from the supplied inserts to match your wiring method.
I've specified the KIT-71100A-W in dozens of retrofit access control upgrades, and the white finish and drywall integration solve a real problem — most integrators are forced to choose between visible surface-mount boxes that look shabby or invasive in-wall routing that requires structural work. This kit, rated for 9VDC electronic strikes, bridges that gap cleanly.
Technical Highlights:
- 9VDC Electronic Strike Compatibility: Designed specifically for 9-volt DC solenoid strikes, the industry standard for Stopper-series deployments. This voltage rating ensures you won't over-spec or under-power your strike mechanism — critical detail when integrating across networked access control panels that may source multiple strike voltages.
- 7mm Masonry-Bit Mounting with Four-Point Fastening: The template-guided installation and four-point load distribution prevent hardware sag or tilt under repeated solenoid energization. I've seen single-point mounts fail under strike load over time — this design distributes stress.
- Gasket-Slot Cable Management: The kit accommodates twisted pair, conduit, or direct-wire configurations through gasket inserts. This flexibility matters when retrofitting into existing cable runs — you're not forced to tear out existing conduit or re-route midway.
Deployment Considerations:
- Verify cable entry port alignment with your specific strike mechanism and button size before ordering. A mismatch forces awkward routing around the faceplate or unused gasket holes — not fatal, but sloppy and harder to service later.
- The spacer inserts for unused ports are easy to lose during installation. Mark them during unboxing and keep them staged separately so you don't have to source replacements mid-job.
The KIT-71100A-W shines in office and light-commercial retrofits where you're upgrading door control on a finished wall. The white enclosure doesn't scream 'institutional security' — it blends. If you're dropping a Stopper Station into a bank lobby or law office where aesthetics matter alongside function, this kit is the right choice.
