Built to take the heatG9 fixtures are demanding: small shades, enclosed glass, sockets packed side by side. That's why the LS-G9-4W-5K uses a
ceramic + PC housing. Ceramic pulls heat away from the LED chips and the polycarbonate body keeps the capsule light and impact-friendly, a far better combination than the scorching quartz halogen capsules people are used to changing every few months. At
L31 x 16 mm (L1 17/32 x 5/8"), the capsule stays discreet inside clear glass shades and slips into the tight cavities of vanity bars and multi-arm chandeliers.
Light quality and beamThis SKU delivers
410 lumens of
5000K white light — a clean, daylight-leaning white that makes whites look white, keeps colours honest and helps a room feel bright and awake. The
360° beam degree is the detail that matters most in decorative fixtures: instead of firing light in one direction like many cheap capsules, it lights the whole shade evenly, so crystal sparkles and frosted glass glows without dark patches or visible hot spots.
Electrical and installationWired for
100 – 120V AC at
4W, this
G9 LED bulb is a true socket-for-socket swap. Cut power at the breaker, let the old halogen capsule cool completely, pull it straight out of the bi-pin socket and press the new one in — the two pins align only one way, so there's nothing to guess. Because it is
dimmable, it works on standard dimmers, but a 4W load is very light for older halogen-style dimmers: if you see flicker or a limited dimming range, an LED-rated dimmer or a few more LED bulbs on the same circuit usually solves it. Never handle the capsule with the fixture energized, and give the socket a quick look for scorching before installing — a legacy of the halogen it replaces.
Technical specificationsProduct Code: LS-G9-4W
SKU: LS-G9-4W-5K
Brand: LUMENSTARLED
Voltage: 100 - 120V AC
Wattage: 4W
Light output: 410 lumens
Colour temperature: 5000K
Beam degree: 360°
Base: G9
Housing: Ceramic + PC
Dimensions (LxWxH): L31 x 16mm (L1 17/32 x 5/8")
Dimmable: Yes
Certifications: c ETL us Listed
Warranty: 3-year
Where it works and what goes with itThink kitchen island pendants and under-cabinet decorative fixtures, bathroom
vanity bars where 5000K helps with grooming and makeup, dining room chandeliers, stairwell sconces, retail display cases, salon mirrors, hotel bedside sconces and office task lamps — anywhere a standard
G9 bi-pin socket is used. For contractors and property managers, the
c ETL us Listed certification means the bulb has been independently tested to North American safety standards, which keeps inspections simple under the Canadian Electrical Code. If some rooms call for a softer feel, mix in the
G9 LED bulb 3000K for bedrooms and dining areas, or the balanced
G9 LED bulb 4000K for hallways and entryways — same body, same base, same 4W draw, just a different mood. The full
technical PDF for the G9 LED BULB is available in the Documentation tab for exact dimensions and ratings before you order.