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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Description

HES SMB-3 Narrow Surface Mount Box US28

The HES SMB-3 is a narrow surface-mounted electrical box engineered for access control and security system installations where space is limited. Its compact profile accommodates narrow frame installations in tight spaces where standard boxes are impractical, making it ideal for retrofit projects and modern building security applications.

Key Features

  • Narrow profile design for compact installation areas
  • Surface-mounted configuration for quick, non-invasive installation
  • US28 stainless steel finish for durability and corrosion resistance
  • Compatible with HES electromagnetic locking systems
  • Professional-grade construction for commercial security applications

Technical Highlights

The SMB-3 features a narrower footprint than standard electrical boxes, allowing secure mounting in retrofit installations and applications with limited wall space. The US28 stainless steel finish provides superior corrosion resistance and professional appearance suitable for indoor and semi-protected outdoor environments.

Applications

  • Access control system installations in narrow doorways
  • Emergency exit hardware integration
  • Retrofit projects with space constraints
  • Commercial office and building security
  • Institutional facilities requiring compact mounting solutions

The HES SMB-3 delivers the reliability and build quality expected from HES Products, a recognized leader in electromechanical security hardware. This narrow surface mount box is an essential component for professional security integrators.

Specifications
Weight: 0.6 lb
Country of Origin: US
Mount Type: Surface Mount
Input Voltage: 24VDC
Product Type: Lock/Strike
Certifications: • LM, LBM Latchbolt Monitor
Warranty: (years)** 5 5 Limited 5 2 5 2 5 5 2 5
Q&A
Reviews

HES SMB-3 Narrow Surface Mount Box US28

$124.00
$68.99

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System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
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