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BLT Direct - Your One Stop Shop for Light Bulbs and Other Lighting Products
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Can I replace a halogen G4 bulb with an LED G4 bulb?
Wed 8th Apr 2026
Yes you can replace a halogen G4 bulb with a LED version. There are a few different factors that you will need to consider before doing so but in the vast majority of cases it should be as simple as swapping the two bulbs over. Driver/transformer compatibility The first thing you will need to check is the voltage. Most
What is a G4 LED light bulb?
Wed 8th Apr 2026
A G4 LED light bulb is a small capsule shaped bulb that has been designed to replace halogen G4 capsule bulbs. They are also 12v which matches the older halogen style and they are available in colour temperatures which include Warm White (2700k), Cool White (4000K) and Daylight (6000K). These bulbs have two small pins that are spaced 4mm apart
How bright should a G9 LED bulb be (lumens guide)?
Wed 1st Apr 2026
Due to LEDs using a much lower wattage than halogen lamps it can sometimes be difficult to establish how bright the bulb will be if you are used to purchasing halogen G9 lamps. It will be useful for us to differentiate the difference between wattage and lumens. Wattage is a measurement of energy consumption and lumens are a measurement of
What size are G9 LED bulbs and will they fit my fixture?
Tue 31st Mar 2026
G9 LED bulbs are designed to fit any standard G9 socket. The 9 within the part code of G9 refers to the pins being 9mm apart. Whilst this measurement will always remain the same size, the physical size of the bulb itself can vary. LED G9 bulbs were once larger than traditional halogen G9 capsules as they needed to have
About BLT Direct
Leading online suppliers
BLT is a leading online supplier of light bulbs, light fittings and specialist lamps, offering a range of lighting solutions to customers around the world.
On our website, customers will find over 20,000 products that are suitable for any lighting project you're working on. Our products include Traditional Incandescent, Halogen, Metal Halide, Compact Fluorescent, Sodium and Mercury Lamps, Fluorescent Tubes, Specialist Lamps and Ballasts and an extensive range of the latest LED products.
Because we are an online business, we've been able to provide our customers with a full range of lighting products at exceptional prices that can be quickly and efficiently delivered to your doorstep.
Our range of products goes from traditional incandescent bulbs and fittings that can be difficult to find elsewhere, to modern energy-efficient solutions, like LED, which deliver long-lasting lighting that's better for the environment.
Lighting expertise
We're known for being an established lighting expert in the UK, and our friendly and experienced customer service team are always on hand to help you out with any questions or queries.
Whether you need advice on the correct bulb, or simply can't find the fitting you were looking for, our expertise means that we can help you get the perfect product, every time.
Call us today, or shop securely online and get one step closer to having the lighting setup of your dreams.
Full range available
At BLT Direct, we stock all of the light bulbs and light fittings you'll ever need to brighten up your home, office or commercial property. Our extensive range of products will help you create an environment that you won't want to leave, whether that's a comfortable and cosy living room, or a bright and optimised workplace.
Not only do we stock a wide array of lighting in a complete range of shapes and sizes, but we also provide you with all the additional fittings you may need to complete a project yourself - without the need to call in the professionals.
Our high-quality and affordable selection will let you unleash your inner interior designer and express your personality to create a truly individual space that perfectly fits your needs. Whether you're into minimal design or want a vintage look, BLT Direct has the perfect solution for you.
We pride ourselves on only stocking products from the most trusted and high-quality manufacturers to ensure that you get the best product possible, every single time. This philosophy has helped us to satisfy over half a million customers who choose to purchase from us again and again for a host of their lighting needs.
Offers and discounts
Although our products are already competitively priced and affordable, we also offer special offers and discounts on certain products to help our customers shop on a budget.
We also ensure that all the fittings we sell are of the highest quality promoting many leading brands and keeping our website up to date with the latest products.