GR10Q GR10q 4‑PIN 28W 20x20cm CFL bulb

This 28W compact fluorescent lamp offers warm white 3500K illumination in a larger 20x20cm square format, suitable for recessed ceiling fittings where a soft, low energy light is needed. It delivers steady output without flicker or noise, and is aimed at indoor locations such as stairwells, corridors, bedrooms and offices.

Key features

The GR10q 4‑PIN design is a square, butterfly‑style CFL with a GR10Q push‑in base and a manufacturer stated life of around 10,000 hours. This model is non‑dimmable and runs from 220–240V, producing warm white light that is easier on the eye in circulation areas. Note that this is the larger 20cm by 20cm size not the smaller 13.3cm by 13.3cm variant, and the wattage is 28W not 16W.

Specifications

• Name: GR10q 4‑PIN 28W
• Type: Compact fluorescent lamp
• Size: 20x20cm
• Colour: Warm white 3500K
• Capacity: 28W
• Voltage: 220-240V
• Material: Glass
• Format: Square butterfly style

Usage tips

Check the cap type and the internal space of your fitting before purchase, because the GR10Q 4‑pin base will not fit 2‑pin GR8 sockets. If your fixture is compact or uses a 13.3cm lamp, this larger bulb will not be suitable. It is not compatible with dimmers, electronic switches, photocells or motion sensors, so use it with standard on/off fittings only.

You’ll like it if you need a soft warm white light for frequent areas and want lower running energy than older halogen options. Bear in mind that the bulb is non‑dimmable and requires a matching 4‑pin holder, so verify compatibility before fitting.

Care & maintenance

Allow the lamp to cool before handling and replace using the correct base to avoid damage. Do not use with control gear or timing devices that the manufacturer warns against, and avoid exceeding the recommended wattage in enclosed fittings.