Product Overview
Sylvania Octron® 700 Series 21740 (FO25/741/ECO) Linear Lamp — 25W | 4100K Cool White | 1,850 Lumens
The Sylvania Octron® 700 Series Ecologic® 21740 (FO25/741/ECO) Lamp is a commercial-grade, high-efficiency energy-saving 4-foot linear fluorescent bulb engineered for office building layout fields, educational institution classrooms, healthcare facility corridors, and retail modular troffers. Delivering 1,850 initial lumens of crisp 4100K cool white light, this reduced-wattage 25-watt tube utilizes an advanced 700-series tri-phosphor lining to achieve a stable color rendering index of 70+ CRI. Outfitted with standard G13 medium bi-pin bases and an ultra-low mercury fill weight, it provides an extended service life up to 35,000 hours when paired with approved high-frequency electronic control gear.
| Wattage 25W Energy Saving T8 | Color Temp 4100K 741 Cool White | Brightness 1,850 1,330 Mean lm | Color Render 70+ Ra 700 Tri-Phosphor | Max Life 35,000 Hours on PRS |
ADL Supply Expert Application & Replacement Guide
The Sylvania FO25/741/ECO linear fluorescent tube is an established industry facility upkeep baseline specified universally across commercial office wings, institutional schools, public administrative bays, and retail strip fixtures. Utilizing a reduced-wattage 25W gas design profile on standard 32W T8 ballasts, this 700-series module enables facility management divisions to instantly trim continuous electrical consumption metrics across large-scale architectural layouts without undertaking the high material and upfront installation expense of complete LED fixture replacements.
Critical Ballast Group Synchronization and Lampholder Electrical Routing: Property managers executing facility-wide re-lamping sweeps must evaluate host fixture socket frameworks prior to completion. This 25-watt linear tube is completely compatible with modern high-frequency electronic Instant Start, Rapid Start, and Programmed Rapid Start (PROStart) control ballasts managing standard 265mA T8 circuit loops.
However, maintenance crews must enforce proper socket regulations: if wiring this tube into an Instant Start network, shunted lampholders are mandatory at all seating channels, requiring the left and right socket contacts to be bridged to direct the high open-circuit ignition voltage cleanly. Conversely, if connecting this lamp to a Programmed Start ballast layout, un-shunted lampholders are mandatory to keep the pin tracks isolated. This structural isolation enables low-voltage preheating paths to warm the filament cathodes safely before full gas ionization strikes. Reversing this configuration will short-circuit wire circuits or bypass filament conditioning, accelerating end-blackening and triggering sudden system failures.
| Verify Before Installing Match Lampholder to Ballast — Instant Start Needs Shunted | Programmed Start Needs Un-Shunted — Shipping Restrictions This tube utilizes a standard 1.00" Inch wide T8 glass envelope shape spanning exactly 35.78" Inches from pin face to pin face. It features an energy-saving 25W configuration—ensure your ballast matches these low-wattage tracking parameters prior to cart checkout. If exposed to heavy drafts or temperatures below 60°F (16°C), visual striation (rhythmic swirling light pulses running down the tube) may occur. This behavior is non-damaging; removing the draft source will instantly normalize operation. State Delivery Restrictions: Due to strict regional environmental and heavy-metal tracking regulations, this fluorescent product cannot be legally sold or shipped to residential or commercial destinations inside CA, CO, HI, ME, MN, OR, RI, or VT. |
Detailed Product Specifications
- Brand Name: Sylvania (OSRAM Sylvania Group / Ledvance Corporate Line)
- Product Series Line: Octron® 700 Series ECOLOGIC® Reduced Wattage Line
- Sylvania Factory Product Order Code SKU: 21740 (Corrected data block cross alignment)
- Manufacturer Description Nomenclature: FO25/741/ECO (Replaces legacy halophosphor string)
- UPC Barcode Number (GTIN-12):046135214370
- Core Technology Class: Fluorescent Gas-Discharge — T8 Linear Discharge Tube
- Primary Control Requirement: 32W/25W T8 Electronic Ballast (High-Frequency 265mA execution)
- Operational Power: 25 Watts
- Nominal Arc Voltage Profile: Ballast Managed (Nominal 100V AC operating voltage across gas column)
- Continuous Operating Amperage Draw: 0.250 Amperes baseline current profile
- Initial Luminous Brightness: 1,850 Lumens (Post standard 100-hour seasoning burn at 25°C)
- Mean Luminous Lifecycle Output: 1,330 Lumens (Measured post the 40% operational life mark)
- Color Temperature Configuration: 4100K Cool White (741 Rare-Earth Phosphor Chemistry Blend)
- Color Rendering Index (CRI): 70+ Ra (Standard Commercial Fidelity Baseline)
- Base Type Configuration: G13 Medium Bi-Pin Base (Standard 13mm center-to-center prong spacing)
- Nominal Tube Profile Diameter: T8 Shield (1.00" Inch / 25.4mm actual outer glass width)
- Maximum Overall Length (MOL): 47.78" Inches Pin Face to Pin Face (1213.6mm actual structural width)
- Nominal Catalog Length Designation: 48" Inches / 4 Feet Class
- Rated Average Service Lifespan (Instant Start 3-Hr Cycles): 20,000 Hours
- Rated Average Service Lifespan (Programmed Start 3-Hr Cycles): 30,000 Hours
- Rated Average Service Lifespan (Instant Start 12-Hr Continuous): 28,000 Hours
- Rated Average Service Lifespan (Programmed Start 12-Hr Continuous): 35,000 Hours
- Chassis Burn Position Limit: Universal — Operates reliably at any horizontal or vertical mounting angle
Operation, Safety & Mounting Compliance
High-Frequency Electronic Signal Isolation
When retrofitted onto modern high-efficiency electronic ballasts (such as Sylvania Quicktronic networks), 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.
Ecologic® Low-Mercury Dosing and Safe Bulk Recycling Protocols
Sylvania Ecologic® manufacturing standards certify that this linear tube utilizes an advanced tri-phosphor chemical composition combined with a tightly metered internal heavy-metal mercury fill dose (limited to 3.5 mg weight profile). 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.
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.
