Sylvania 24004 FB40/CWX/6

Sylvania 24004 FB40CWX6 – 40W T12 U-Bend Fluorescent Lamp | 4100K | 2100 Lumens | CRI 87 | 6-Inch Leg Spacing

The Sylvania 24004 FB40CWX6 Curvalume is a 40-watt T12 U-bend fluorescent lamp designed for compatible rapid-start fixtures with 6-inch leg spacing. It produces approximately 2,100 initial lumens at 4100K with a high CRI of 87. Its rare-earth phosphor coating supports improved color appearance in general lighting, property-management, residential, specialty, and color-matching applications. The manufacturer datasheet identifies the base as G12; confirm the exact lampholder and pin configuration against the existing lamp before ordering. Also verify the complete product code, wattage, voltage, ballast compatibility, leg spacing, dimensions, and color temperature.

Technical Specifications

Product Overview

The Sylvania 24004 FB40CWX6 is a Curvalume T12 U-bend fluorescent lamp designed for fixtures requiring a 40-watt rapid-start source with 6-inch leg spacing. The U-shaped tube allows a long fluorescent discharge path to fit within compatible recessed and surface-mounted fixtures.

The lamp produces approximately 2,100 initial lumens at 4100K. Its rare-earth phosphor coating and CRI of 87 provide stronger color rendering than standard cool-white fluorescent lamps, making it suitable for color matching and other applications where product, material, and finish appearance are important.

This lamp requires compatible fluorescent control gear. The lamp’s 40W rating, rapid-start requirement, U-bend dimensions, leg spacing, pin configuration, ballast type, and fixture clearances must all be confirmed. A visually similar U-bend lamp may have different wattage, spacing, base, color, or ballast requirements.

Compatible Applications

• General commercial lighting
• Property-management and facility-maintenance applications
• Compatible residential fluorescent fixtures
• Specialty lighting
• Color-matching and color-critical spaces
• Retail and display areas requiring higher color rendering
• Maintenance replacement where Sylvania product number 24004 is specified

Before Ordering – Verify

• Product number: Confirm Sylvania NAED 24004.
• Ordering abbreviation: Verify FB40CWX6.
• Wattage: Confirm the fixture and ballast are designed for a 40W T12 U-bend lamp.
• Starting method: This is a rapid-start fluorescent lamp.
• Base and pins: The manufacturer datasheet lists G12. Compare the lamp ends and socket configuration directly with the existing installation before ordering.
• Leg spacing: Confirm the fixture requires 6-inch spacing between the two lamp legs.
• Color: This lamp is 4100K with CRI 87 and light-color code 841.
• Dimensions: Verify approximately 22.60 inches overall length and 1.59-inch tube diameter.
• Ballast compatibility: Confirm the exact ballast model is approved for a 40W T12 rapid-start lamp.
• Minimum starting temperature: Starting temperature depends on the ballast; consult the ballast manufacturer.
• Dimming: This lamp is listed as non-dimmable.
• Sibling lamps: Do not substitute 34W energy-saving, different-leg-spacing, T8, LED, or different-color U-bend lamps solely because they appear similar.
• Replacement claim: The supplied PDF does not state that product 24004 directly replaces Sylvania 24054. Verify that substitution separately before publishing it.
• Packaging: One lamp per SKU and 12 lamps per case.

Safety and Handling Guidelines

• Disconnect and lock out electrical power before inspection, installation, maintenance, or removal.
• Use only in a fixture and ballast system rated for this 40W T12 rapid-start lamp.
• Handle the U-bend lamp carefully and support both legs during installation.
• Do not twist, spread, or force the lamp legs to fit incorrect socket spacing.
• Do not install a lamp that is cracked, chipped, loose, or otherwise damaged.
• The lamp must not contact any surface of the luminaire.
• For high-frequency ballast systems, maintain at least 3 mm between the lamp and conductive luminaire surfaces.
• Fully seat the lamp pins in the compatible lampholders.
• Minimum starting temperature depends on the ballast and system design.
• Allow the lamp and fixture to cool before handling.
• Installation and ballast service should be performed by qualified personnel.

Compliance

• This fluorescent lamp contains 8.5 mg of mercury.
• Recycle or dispose of the lamp according to applicable local, state, and federal mercury-lamp regulations.
• No UL, ETL, RoHS, ENERGY STAR, DLC, Title 20, Title 24, JA8, or TCLP compliance claim is identified for this exact product in the supplied datasheet.
• Sales or shipping restrictions may apply in jurisdictions regulating mercury-containing fluorescent lamps.

Ordering Information

• Brand: Sylvania / LEDVANCE
• Product Number: 24004
• Ordering Abbreviation: FB40CWX6
• Product Family: Curvalume
• Lamp Type: T12 U-bend rapid-start fluorescent
• Wattage: 40W
• Nominal Voltage: 100V
• Leg Spacing: 6 inches
• Color Temperature: 4100K
• CRI: 87
• Initial Lumens: Approximately 2,100
• Average Rated Life: 18,000 hours
• Extended-Cycle Life: 28,800 hours at 12 hours per start
• Overall Length: 573.99 mm / approximately 22.60 inches
• Tube Diameter: 1.59 inches
• Quantity per SKU: 1 lamp
• Case Quantity: 12 lamps
• UPC: 0046135240041

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp and ballast compatibility, contact ADL Supply at 1-800-235-3489.