Sylvania 24438 F40N

Sylvania 24438 F40N – 40W T12 Rapid Start Fluorescent Lamp | 3600K | 2,100 Lumens | G13 Medium Bi-Pin

2,100 lumens at 3600K Natural White with CRI 86 – a 40W T12 Rapid Start fluorescent lamp designed for rapid start fixtures.

Quick Specs

• Brand: Sylvania
• Product Code / Model: 24438 / F40N
• Lamp Type: Fluorescent – T12 Rapid Start
• Starting Method: Rapid Start
• Wattage: 40W
• Base Type: G13 Medium Bi-Pin
• Color Temperature: 3600K Natural White
• CRI: 86
• Initial Lumens: 2,100 lm (approx., after 100 hours of operation)
• Mean Lumens: 1,805 lm (measured at 40% of rated life)
• Rated Average Life: 20,000 hr at 3 hours per start
• Rated Average Life (12 hr/start): 28,800 hr
• Nominal Length: 48 in
• Maximum Overall Length (MOL): 47.78 in
• Bulb Diameter: 1.5 in (T12)

Product Overview

The Sylvania 24438 F40N is a 40W T12 Rapid Start fluorescent lamp delivering 2,100 initial lumens at 3600K Natural White. It is built for rapid start fixtures where lamp length, base type, ballast type, wattage, and color temperature must match the existing system.

This lamp is best suited for maintenance replacement in commercial, industrial, and institutional spaces. Before ordering, confirm the G13 Medium Bi-Pin base, 40W wattage, and 3600K color temperature against your existing lamp or fixture label.

Why Choose This Product

• 2,100 initial lumens: Catalog rating after 100 hours of operation, with 1,805 mean lumens at 40% of rated life.
• 3600K Natural White: Helps match the existing light color across a facility.
• G13 Medium Bi-Pin base: Designed for the correct T12 socket style; confirm before replacement.
• 20,000 hr rated average life: Rated at 3 hours per start; longer burn cycles increase lamp life.
• Sylvania quality: Suitable for professional lighting applications and facility maintenance.

Technical Specifications

Dimensions

Applications

• Maintenance and retrofit replacement in compatible rapid start fixtures
• Commercial, industrial, and institutional facilities and utility spaces
• Replacement for existing F40N lamps – confirm the lamp code on your current lamp

Compatibility & Replacement

Fixture type: Designed for rapid start fixtures using a G13 Medium Bi-Pin base.

Ballast: Requires a rapid start ballast rated for this lamp. Always confirm the existing ballast label before ordering.

Starting temperature: Minimum starting temperature is a function of the ballast; consult the ballast manufacturer.

Sylvania catalog notes for this lamp:

• 40-watt rapid start lamps may be used in starter-operated fixtures designed for 40-watt preheat lamps; the life rating for preheat service is approximately 15,000 hours average.

Before ordering, confirm:

• Existing lamp model matches F40N or an approved equivalent.
• Fixture socket matches G13 Medium Bi-Pin.
• Wattage is 40W and the ballast is compatible.
• Color temperature is 3600K Natural White.
• Physical size is 48 in nominal length (47.78 in MOL) x 1.5 in diameter.

Ordering Information

• Brand: Sylvania
• Product Code / Model: 24438 / F40N
• Description: 40W T12 Rapid Start fluorescent lamp, 3600K Natural White, 2,100 lumens, G13 Medium Bi-Pin base
• Specifications: Taken from the Sylvania linear fluorescent lamp catalog; specifications are subject to change without notice.

Safety & Handling Notes

• Disconnect power before installing or servicing.
• Use only in approved fixtures designed for compatible F40N lamps.
• Fluorescent lamps contain mercury and should be recycled or disposed of according to local regulations.
• Follow the fixture manufacturer's instructions and local electrical codes for installation.

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