Sylvania CF18DDE/835/ECO – Dulux D/E Compact Fluorescent Lamp, 18W, 3500K, G24q-2 4-Pin, T4 Double Tube

Specifications

• Wattage: 18W
• Bulb Type: T4 Double Tube (T4x2)
• Base: G24q-2 (4-Pin)
• Color Temperature: 3500K – Natural White
• Color Rendering Index (CRI): 82
• Initial Lumens (25°C): 1150 lm
• Mean Lumens (25°C): 989 lm
• Maximum Overall Length (MOL): 5.8 in (147 mm)
• Rated Average Life: 12,000 hours
• Industry Standards: IEC 60901-2518
• Family Brand: Dulux® D/E
• Ordering Code: CF18DDE/835/ECO
• Packaging: 50 lamps per case

Key Features

• Natural white 3500K for comfortable, balanced light
• G24q-2 4-pin base for electronic/dimming ballast compatibility
• Compact T4 double-tube design saves space in fixtures
• Ecologic® lamp – TCLP compliant, reduced mercury content
• Long life – up to 12,000 hours average rated life
• High color quality with CRI 82

Additional Information

Performance & Operation:
– Approximate initial lumens measured after 100 hours operation.
– Lamp life is based on 3-hour operating cycles with ANSI-spec ballasts.
– Longer burning cycles extend average life.
– Minimum starting temperature depends on ballast (consult manufacturer).

End-of-Life Notes: NEMA has reported that T2, T4, and T5 compact fluorescent lamps on high-frequency ballasts may experience abnormal end-of-life behavior, including base overheating or cracking. To prevent this, use electronic ballasts with end-of-life shutdown circuits.

Rule of Thumb – Incandescent Replacement

To estimate compact fluorescent wattage needed for incandescent replacement:
Divide the incandescent wattage by 4. Example: A 75W incandescent ≈ 18W CFL for similar light output.

Ideal Applications

• Commercial downlights and wall sconces
• Retail and hospitality fixtures
• Office and residential recessed lighting
• Fixtures designed for 4-pin CFL lamps with electronic ballasts