A60, G45, ST64, G95 and G125 — Light Bulb Shapes Explained
A60, G45, ST64, G95 and G125 — Light Bulb Shapes Explained
Learn light bulb shapes in simple terms. Bulb shape affects appearance, physical fit and light distribution, while the base determines electrical compatibility. This guide includes selection checks, common mistakes and relevant Whitehouse product examples.
Quick answer: Bulb shape affects appearance, physical fit and light distribution, while the base determines electrical compatibility.
Why this matters
Customers often reach a product page after searching for one specification, but the correct result depends on how several specifications work together. Understanding the terms below helps prevent incompatible purchases, poor light quality and unnecessary replacement costs.
- A60 is the familiar household globe shape used for general lighting.
- G45 is a compact round 'golf-ball' shape for smaller decorative fittings.
- ST64 is an elongated vintage shape often used in exposed pendants.
- G95 and G125 are larger globe shapes designed to become visible decorative features.
- The number generally relates to approximate maximum diameter in millimetres, but always check the product dimensions.
How to choose the right product
- Confirm the base separately from the shape.
- Measure the shade opening and internal clearance.
- Use opal bulbs where glare control is important.
- Use clear filament designs where the globe is intentionally visible.
- Check overall height because decorative shapes may project below the fitting.
Relevant products from the Whitehouse range
The examples below were selected from active, in-stock products in the latest Whitehouse Lighting & Electrical catalogue. They are examples rather than universal substitutes: always match the exact base, voltage, dimensions, rating and application.
LED Basic A60 E27 7W Opal Bulb 6000K
LED Basic — standard A60 globe shape. This product was active and in stock in the latest catalogue reviewed for this article. Confirm the current product page specifications and availability before ordering.
WHL&E B3-05 4W G45 Filament Bulb E27 3000K
Whitehouse Lighting And Electrical — decorative filament appearance. This product was active and in stock in the latest catalogue reviewed for this article. Confirm the current product page specifications and availability before ordering.
Brightstar BULB LED 196 6W Filament Bulb E27 2700K
Brightstar — decorative filament appearance. This product was active and in stock in the latest catalogue reviewed for this article. Confirm the current product page specifications and availability before ordering.
Common mistakes to avoid
- Assuming all E27 bulbs are the same physical size.
- Choosing an oversized globe for a closed shade.
- Selecting a clear high-output filament lamp at eye level without glare control.
Frequently asked questions
Can a G125 fit an E27 holder?
Yes, when the G125 uses an E27 base, but the fitting still needs enough physical space.
Is ST64 brighter than A60?
Shape alone does not determine brightness; compare lumens.
What shape is best for a chandelier?
Candle or compact globe shapes are common, but the holder and shade design determine the correct choice.
Shop with the specification in mind
Start with the technical requirement, then compare finish, brand and price. Whitehouse Lighting & Electrical supplies lighting, solar and electrical products for homes, contractors and businesses throughout South Africa. Use the linked product pages above or contact the team with a clear photograph of the existing fitting, label or installation requirement.
Related reading: E27 vs B22 vs E14 vs GU10 bulb-base guide and GU10 vs MR16 and GU5.3 — Downlight Bases, Voltage and Compatibility
Technical references
Product availability and specifications can change. Verify the current product page and manufacturer documentation before purchase or installation.