GE F28W/T5/841/ECO 28W 4100K 4 FT T5 Fluorescent Bulb | G5 Bi-Pin

The GE Standard Output ECOLOGIC® 46706 (F28W/T5/841/ECO) Lamp is a commercial-grade, high-efficiency miniature linear fluorescent bulb engineered for shallow architectural troffers, low-profile under-cabinet displays, modern classroom pendant rows, and modular office ambient fixtures. Delivering a dependable 2,900 initial lumens of crisp 4100K cool white light, this full-wattage 28-watt tube utilizes an advanced tri-phosphor chemistry coating to achieve an exceptional color rendering index of 85 CRI. Outfitted with precision G5 miniature bi-pin bases and a tightly metered low-mercury formulation, it secures a reliable 24,000-hour rated average service life when driven by high-frequency electronic programmed rapid start control gear.

ADL Supply Expert Application & Replacement Guide

The GE F28W/T5/841/ECO miniature linear lamp is an established industrial facility maintenance baseline specified universally across commercial properties, administrative offices, hospital wings, and architectural displays. Featuring a highly stable standard-output tri-phosphor lining, this ECOLOGIC® series tube maintains a clean 91% lumen tracking curve across its entire service lifecycle, completely preventing the rapid light depreciation or yellow-green color drift common in generic linear fluorescent bulbs.

Critical 45.2-Inch Casing Length Boundaries & Lampholder Electrical Controls: Facility crews and contracting teams executing routine building upkeep sweeps must carefully evaluate physical fixture dimensions prior to cart checkout. **This miniature T5 tube measures exactly 45.20 Inches from base face to base face**—it is custom-tailored strictly for metric-dimensioned T5 luminaires. Attempting to force this lamp inside standard standard 4-foot fluorescent channels (which measure 47.78 inches) will leave an extensive structural gap, preventing the prongs from making contact or locking into the fixture base.

Furthermore, because modern T5 lighting networks run exclusively over high-frequency electronic programmed-start ballasts, un-shunted miniature G5 lampholders are mandatory at both terminal ends. Un-shunted sockets keep the individual pin contact tracks completely isolated, allowing low-voltage preheating tracks to condition the filaments safely before full gas discharge arc ignition strikes. Reversing this configuration will short-circuit your ballast preheat circuits, triggering sudden system non-ignition or premature cathode blowout.

Detailed Product Specifications

• Brand Name: GE Lighting (Current Lighting Solutions Group / Multi-Vapor Line)
• Product Series Line: Standard Output ECOLOGIC® Metric Miniature T5 Series
• GE Factory Product Order Code SKU: 46706
• Manufacturer Description Nomenclature: F28W/T5/841/ECO
• UPC Barcode Number (GTIN-12): 043168467063
• Core Technology Class: Fluorescent Gas-Discharge — T5 Miniature Straight Linear Tube
• Primary Control Requirement: High-Frequency Programmed Rapid Start T5 Electronic Ballast
• Operational Power: 28.0 Watts
• Nominal Arc Voltage Profile: Ballast Managed (Continuous high-frequency operating voltage across gas column)
• Initial Luminous Brightness: 2,900 Lumens (Post standard 100-hour seasoning burn at 25°C)
• Mean Luminous Lifecycle Output: 2,660 Lumens (91% Systemic Lumen Maintenance Factor at 40% life)
• Luminous Efficacy Ratio: 104 Lumens per Watt (LPW)
• Color Temperature Configuration: 4100K Cool White (841 Premium Phosphor Chemistry Blend)
• Color Rendering Index (CRI): 85 Ra (High Office Efficacy Color Fidelity Baseline)
• Base Type Configuration: G5 Miniature Bi-Pin Base (5mm prong spacing pitch)
• Glass Tube Casing Material: Premium Industrial Soda Lime Glass
• Nominal Tube Profile Diameter: T5 Shield (0.625" Inch / 15.9mm; Max structural width 0.670" / 17.0mm)
• Maximum Overall Length (MOL): 45.200" Inches Face to Face (1148.1mm actual metric width)
• Rated Average Service Lifespan (3-Hour Cycles): 20,000 Hours
• Rated Average Service Lifespan (12-Hour Continuous Cycles): 24,000 Hours
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal or vertical mounting angle

Operation, Safety & Mounting Compliance

High-Frequency Electronic Signal Transformation

When retrofitted onto modern high-efficiency electronic programmed-start ballasts, this lamp operates at frequencies exceeding 40 kHz, completely eliminating stroboscopic workplace eye fatigue and structural flickering loops common in old low-frequency magnetic systems. It incorporates an automated active surge insulation barrier that blocks standard utility switching transients and operational spikes from breaking down sensitive internal solid-state board capacitors.

Low-Mercury Dosing and Safe Bulk Recycling Protocols

GE ECOLOGIC® manufacturing standards certify that this metric linear tube utilizes an advanced tri-phosphor chemical composition combined with a tightly metered internal heavy-metal mercury fill dose. This structural configuration allows spent modules to cleanly pass the strict Federal Toxic Characteristic Leaching Procedure (TCLP) test protocols under NEMA guidelines, preventing high-density environmental pollution. However, as an mercury-containing device, spent bulbs must be securely routed to certified regional commercial electronic waste processing repositories during facility maintenance sweeps rather than discharged into municipal solid landfills.

Commercial Equipment Industry Cross-References

This premium 28W T5 linear bulb serves as a direct drop-in replacement or electrical equivalent for the following lines:

• Sylvania Competitor Match: Pentron FP28/841/ECO / Order Code 20902
• Philips Lighting Match: Silhouette F28T5/841 Alto Series / USA Catalog Part 230847
• Satco Hygrade Reference: S8132 / Standard Output 28W T5 Line

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.