Brand: Circle

Circle PLC-13W 835 | G24q-1 4-Pin Double Tube Compact Fluorescent Bulb | 3500K Neutral White | 4-Pack The Circle PLC-13W 835 is a 13-watt double-tube compact fluorescent (CFL) plug-in bulb designed as a direct replacement for G24q-1 4-pin ballasted fixtures. Whether you are replacing burned-out bulbs in an office, hotel, retail space, residential hallway, or waiting room, this 4-pin CFL delivers consistent 3500K neutral white light that works across both commercial and residential environments. COMPATIBILITY AND INSTALLATION This bulb is designed to fit any fixture with a G24q-1 4-pin base (also referenced as GX24q-1). It is a plug-in ballast-dependent lamp - it requires a compatible 4-pin electronic or magnetic ballast already installed in the fixture. It is NOT compatible with 2-pin bases (GX23, GX23-2) or screw-in (E26/E27) sockets. Always verify your fixture's existing base type and pin count before ordering. Cross-reference replacement models: Philips: 38327-3 / PL-C 13W/835/4P/ALTO GE: 97596 / F13DBX/835/ECO4P Sylvania: 20671 / CF13DD/E/835 Plusrite: CFQ13W/G24q/835 GCP 099 LIGHT QUALITY The 835 designation means 3500K color temperature - a neutral white tone that sits between warm (soft white) and cool (bright white). This color range is widely preferred in offices, schools, retail spaces, and healthcare environments for its balanced, comfortable appearance. With an 82 CRI (Color Rendering Index), this bulb renders colors accurately enough for most task, display, and occupancy lighting applications. LIFESPAN AND EFFICIENCY Each bulb is rated for 12,000 hours of average life. For commercial environments with extended daily operating hours, this translates to fewer relamp cycles and reduced maintenance labor. The 13-watt power consumption makes this an efficient compact fluorescent option for multi-fixture installations where managing electricity costs matters. WHERE THESE BULBS ARE COMMONLY USED Recessed downlights in offices and hotel guest rooms | Ceiling-mounted 4-pin CFL troffers | Wall sconces in hallways and lobbies | Under-cabinet lighting fixtures | Desk and floor lamps with G24q-1 4-pin sockets | Retail display lighting | Healthcare and education facility lighting PACK OF 4 Each order includes 4 bulbs, making this an ideal choice for replacing multiple fixtures in one purchase or keeping spares on hand for facilities that require consistent maintenance stock. Circle is a lighting manufacturer specializing in CFL replacement lamps designed to meet the specifications of the major-brand equivalents they replace. All Circle lamps are manufactured to match original specifications for base type, wattage, color temperature, and dimensional fit.

Features:

• DIRECT REPLACEMENT FOR PHILIPS, GE & SYLVANIA - This 13W double-tube CFL is a verified drop-in replacement for Philips 38327-3 (PL-C 13W/835/4P/ALTO), GE 97596 (F13DBX/835/ECO4P), and Sylvania 20671 (CF13DD/E/835). Fits any fixture with a G24q-1 4-pin socket. Check your current bulb's base label or fixture socket before ordering to confirm compatibility.
• WORKS IN RECESSED CANS, CEILING FIXTURES, WALL SCONCES & MORE - Designed for plug-in G24q-1 4-pin fixtures commonly found in offices, waiting rooms, hotel rooms, retail spaces, residential hallways, and under-cabinet lighting systems. Requires a compatible 4-pin ballast (electronic or magnetic). Not compatible with 2-pin GX23 or GX23-2 sockets - verify your fixture's base type before installing.
• 3500K NEUTRAL WHITE - COMFORTABLE, NATURAL-LOOKING LIGHT - Produces neutral white light at 3500K (also marked as "835" on compatible bulbs), delivering a balanced tone that reduces eye fatigue and works well in offices, classrooms, retail displays, and residential spaces where warm-but-clear light is preferred. 82 CRI renders colors accurately for tasks requiring good color visibility.
• RATED 12,000 HOURS - FEWER REPLACEMENTS, LOWER MAINTENANCE COSTS - Each bulb is rated for 12,000 hours of average life, significantly reducing how often fixtures need to be relamped. At 13 watts, these compact fluorescent bulbs deliver efficient performance that helps lower energy consumption in multi-fixture commercial and residential settings. Pack of 4 provides immediate replacements for larger installations.
• SPECIFICATIONS AT A GLANCE - 13 Watts
• 3500K Neutral White
• 82 CRI
• G24q-1 4-Pin Base
• Double Tube
• 5.05" Length
• Compact Fluorescent (CFL)
• 4-Pack

Product Details:

• Color: 3500 Kelvin, Soft White
• Size: 4 Pack
• Model: PLC-13W 835
• Package Quantity: 4