Key Features

• Two-Bulb Set — FC16T9/CW & FC12T9/CW — Includes both a 16-inch 40W and a 12-inch 32W T9 circular fluorescent tube, covering the two most common circline sizes in a single order.
• 4100K Cool White Light Output — Delivers crisp, neutral cool white illumination ideal for workspaces, kitchens, offices, and commercial facility lighting where accurate task visibility matters.
• CRI 82 Color Rendering — A Color Rendering Index of 82 ensures colors appear natural and accurate under these bulbs, suitable for retail, office, and work-area environments.
• High Combined Lumen Output — 5,300 lm Total — The 40W FC16 produces 3,150 lumens and the 32W FC12 produces 2,150 lumens, delivering strong, even illumination across a wide area.
• Standard G10q 4-Pin Base — The universal 4-pin G10q base is compatible with a wide range of circular fluorescent fixtures from multiple manufacturers without modification.
• 110V AC Operation — 72W Total Consumption — Both bulbs together draw only 72 watts at standard 110-volt AC supply, making this an energy-conscious replacement for older or higher-wattage circular tubes.
• Long Rated Lifespan — 8 Years — Rated for approximately 8 years of service based on 4 hours of daily use, reducing replacement frequency in regularly used fixtures.
• Direct Replacement Compatibility — Drop-in replacement for GE, Sunlite, Sylvania, and Philips FC12T9/CW and FC16T9/CW circular fluorescent bulbs with no rewiring required.
• Indoor & Outdoor Rated — Suitable for both indoor and outdoor fixture applications where T9 circline fluorescent tubes are used.

Technical Specifications

Compatibility & Direct Replacement

The Celiwace FC12T9/CW and FC16T9/CW bulbs are designed as direct drop-in replacements for T9 circline fluorescent tubes from major brands. If your existing fixture currently uses any of the following, this set is a compatible replacement:

• GE FC12T9/CW and FC16T9/CW circular fluorescent tubes
• Sylvania FC12T9/CW and FC16T9/CW circline bulbs
• Philips FC12T9/CW and FC16T9/CW circular fluorescent lamps
• Sunlite FC12T9/CW and FC16T9/CW T9 circline tubes
• Any fixture using a standard G10q 4-pin base with T9 circular fluorescent tubes at 110V AC

Always verify your fixture's base type (G10q 4-pin), tube diameter (T9), ring diameter (12 in or 16 in), and voltage (110V AC) before purchasing.

Use Cases

The 4100K cool white color temperature and high combined lumen output make this Celiwace circline set well suited for a variety of lighting applications:

• Office & Commercial Facilities — Bright, neutral cool white light supports focused task work and reduces eye strain in office environments.
• Kitchen & Utility Lighting — Circular fluorescent fixtures are common in kitchen ceiling mounts; the 4100K output provides clear, accurate illumination for food preparation areas.
• Retail & Display Areas — CRI 82 helps merchandise and products appear true to color under these bulbs.
• Workshop & Garage Lighting — High lumen output (5,300 lm combined) delivers strong ambient light for detailed work.
• Facility Maintenance Replacement — Ideal for building managers and maintenance teams replacing aging T9 circline tubes in existing circular fluorescent fixtures.

What Is Included

• 1 × Celiwace FC16T9/CW — 16-inch T9 Circular Fluorescent Tube, 40W, 4100K, G10q 4-Pin
• 1 × Celiwace FC12T9/CW — 12-inch T9 Circular Fluorescent Tube, 32W, 4100K, G10q 4-Pin