Sylvania 20310 CF7DS/835/ECO – 7W | 3500K Natural White | 400 Lumens | G23 2-Pin | Ecologic

The Sylvania 20310 CF7DS/835/ECO is a 7W 3500K Natural White Dulux‑S single twin‑tube compact fluorescent lamp delivering 400 initial lumens, CRI 82, G23 2‑pin base, and 10,000‑hour rated life. Requires external ballast — not self‑ballasted. UPC: 46135203107.

Quick Specs

• Brand: Sylvania
• Series / Family Name: Dulux‑S Ecologic
• Item Number / P/N: 20310
• Order Code: CF7DS/835/ECO
• UPC: 46135203107
• Lamp Type / Bulb Type: T4 Single Twin‑Tube CFL
• Wattage: 7W
• Equivalent Wattage: Verify with manufacturer specification sheet
• Voltage: Requires external ballast
• Color Temperature: 3500K Natural White
• CRI: 82
• Initial Lumens: 400 lm
• Mean Lumens: Verify with manufacturer specification sheet
• Rated Average Life: 10,000 hours
• Base Type: G23 2‑Pin (integral starter)
• Overall Length (MOL): 5.3 in (134.6 mm)
• Diameter: T4 (0.5 in / 12.7 mm)
• Dimmable: No – not self‑ballasted; verify ballast compatibility
• Start Type: Instant start with integral starter
• Ballast Compatibility: Magnetic ballast only
• Burn Position: Universal
• Operating Position: Any
• Applications: Downlights, wall sconces, recessed fixtures, exit signs, showcases, task lighting
• Certifications: ANSI C78.901‑2001, TCLP compliant

Product Overview

The Sylvania Dulux‑S CF7DS/835/ECO is a 7W compact fluorescent lamp with a 3500K Natural White color temperature, offering a balanced, neutral light ideal for offices, healthcare, and retail environments. Its G23 2‑pin base requires an external magnetic ballast with an integral starter.

This T4 single twin‑tube lamp provides 400 initial lumens and an 82 CRI, ensuring accurate color rendering. The Ecologic design passes TCLP tests and reduces mercury emissions compared to standard incandescent lamps. With a 10,000‑hour rated life, it minimizes relamping costs in commercial settings.

Install only in fixtures with a compatible magnetic ballast. The lamp operates in any burn position and fits standard G23 sockets with a 5.3‑inch length requirement.

Applications

• Downlights and wall sconces – Neutral white light for balanced commercial ambiance.
• Recessed ceiling fixtures – Suitable for shallow recessed housings in offices and healthcare.
• Exit signs and showcases – Long life reduces maintenance in signs and display cases.
• Task lighting – Ideal for desk lamps requiring G23 base.
• Retrofit and maintenance replacement – Drop‑in replacement for existing 7W G23 CFLs.

Replacing Your Current Lamp?

• Wattage – Confirm fixture is rated for 7W.
• Base type – Verify G23 2‑pin base (not GX23 or G24d).
• Length – Ensure fixture accepts 5.3‑inch MOL.
• Burn position – Universal.
• Ballast compatibility – Requires magnetic ballast with integral starter support.
• ANSI code – ANSI C78.901‑2001.

Ordering Information

• Brand: Sylvania
• Item Number / P/N: 20310
• UPC: 46135203107
• Wattage / CCT: 7W / 3500K Natural White
• Base: G23 2‑Pin
• Packaging: Sold individually
• Also available in: 2700K, 3000K, 4100K, 5000K (verify availability)
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

Compliance

• Verify RoHS compliance status with manufacturer specification sheet.
• Verify California Title 20 / Prop 65 requirements with manufacturer specification sheet.
• ANSI C78.901‑2001, TCLP compliant.
• This lamp contains mercury – dispose per local lamp recycling regulations. Visit lamprecycle.org.

ADL Supply recommends confirming all compliance data with the official manufacturer product data sheet prior to specification or installation.