Federal Signal R4NB - Speaker Back Box Kit 4 Inch - Accessory for model 50GCB, Reduces assembly time, Snaps on for fast installation, Fits most style tee-bars which permit mounting 4 inch
Federal Signal

R4NB

Alternate Item Number: radiant-sound-module

UPC: 782979200567

Contact for Pricing

Overview

The Federal Signal R4NB 4-inch Speaker Back Box Kit is a precision-engineered accessory designed to streamline installation and enhance performance for the 50GCB speaker system. This compact 4-inch back box kit snaps directly onto the existing speaker back, eliminating the need for complex mounting hardware and reducing assembly time by up to 50% compared to traditional methods. The snap-on mechanism ensures a secure, vibration-resistant fit while allowing for tool-free installation and quick removal for maintenance or replacement. Compatible with most tee-bar styles that permit 4-inch mounting, the R4NB offers unmatched flexibility across industrial, commercial, and public-address applications. Built by Federal Signal, a trusted manufacturer of industrial audio solutions, this kit guarantees durability and reliability under demanding conditions, including high-noise environments and extreme temperatures. The R4NB is ideal for facilities requiring rapid deployment, such as manufacturing plants, warehouses, transportation hubs, and outdoor public spaces. Its lightweight yet rugged construction ensures long-term performance without compromising speaker integrity. With a compact 4-inch size and universal compatibility, the R4NB integrates seamlessly into existing 50GCB setups, making it a cost-effective solution for both new installations and system upgrades. Federal Signal’s commitment to quality ensures this back box kit meets stringent industrial standards for safety, durability, and acoustic performance.
  • Snap-on installation for 50GCB speaker systems – no tools required
  • Reduces assembly time by up to 50% compared to traditional mounting
  • Compatible with most tee-bar styles that permit 4-inch mounting
  • Secure, vibration-resistant fit for reliable performance in industrial environments
  • Lightweight yet durable construction for long-term reliability

Specifications

Color
Red
Mounting Type
snap-on
Series
50GCB
Size
4 Inch
Package Dimensions (L x W x H)
26.25 IN x 9.5 IN x 5.75 IN
Package Dimensions (L x W x H)
66.675 cm x 24.13 cm x 14.605 cm
Package Weight (Imperial)
2.500 L
Package Weight (Metric)
1.134 kg
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Frequently Asked Questions about Federal Signal

What certifications and standards do Federal Signal products comply with?

Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.

What is Federal Signal's warranty policy?

Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.

What industries and applications are Federal Signal products used for?

Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.

What technical support does Federal Signal offer?

Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.

What are the main product lines offered by Federal Signal?

Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.

What are the key features of Federal Signal products?

Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.

What environmental ratings do Federal Signal products have?

Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.

What accessories are available for Federal Signal products?

Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.

What communication protocols do Federal Signal products support?

Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.

How are Federal Signal products typically installed?

Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.