Twisted Globe Filament Bulb E27 40W — Squirrel Cage, 2700K Amber Glow, Organic Vintage Form
A vintage incandescent bulb with an organically shaped, slightly irregular globe body and a squirrel cage filament, delivering a deep 2700K amber tone at 40W. E27 cap, standard EU/UK mains (220–240V). CE, RoHS and CCC certified. Bulb sold individually — fitting not included.
Technical Specifications
| Light source | Incandescent tungsten filament — replaceable |
| Cap / Socket | E27 (standard Edison screw) — also fits E26 |
| Bulb shape | Twisted globe — organic, slightly irregular form |
| Filament type | Squirrel cage (multi-loop decorative) |
| Wattage | 40W |
| Colour temperature | 2700K — extra warm amber |
| Voltage | 220–240V / 50Hz |
| Glass | Clear — hand-formed irregular globe |
| Dimmable | Yes — compatible with standard incandescent dimmers |
| Certifications | CE (EU / UK), RoHS, CCC |
Twisted Globe — Organic Form, Squirrel Cage Filament, Unfiltered Warmth
Most decorative bulbs pursue precision — a perfect sphere, a symmetrical teardrop, a geometric diamond. This one does the opposite. The twisted globe body is deliberately irregular: slightly asymmetric, with a softly distorted silhouette that reads as hand-formed rather than machine-made. Inside, the squirrel cage filament — a multi-loop arrangement of tungsten wire — glows as a dense, three-dimensional structure that fills the glass with warm light from every angle. At 40W and 2700K, the output is genuine incandescent amber — deeper and more orange-tinted than any LED equivalent, and noticeably warmer than a standard 3000K warm white. This is the bulb for spaces where the goal is atmosphere over accuracy: a bedside lamp, a reading corner, a bar cart, or a pendant over a dining table where the light is meant to slow things down. It is dimmable with a standard incandescent dimmer, which allows the amber tone to deepen further as the output drops.
Because the glass body is irregular, no two bulbs are exactly alike — minor variations in the globe shape are a characteristic of the manufacturing process, not a defect. This makes it particularly well suited to single-pendant fittings or exposed-socket wall lights where the individual character of the bulb is part of the appeal. In a multi-bulb chandelier, the slight variations between bulbs add to the handcrafted quality of the overall effect. Use it in open or clear-glass fittings where the twisted silhouette and squirrel cage filament remain fully visible. Browse our wall lights collection for compatible exposed-socket fittings, or read our interior lighting tips for advice on using decorative bulbs effectively.
Common Questions
What is a squirrel cage filament?
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A squirrel cage filament is a decorative tungsten wire arrangement in which multiple loops of wire are connected in parallel between two end supports, forming a cylindrical or cage-like structure inside the bulb. Unlike a single straight or coiled filament, the squirrel cage creates a dense, three-dimensional glow that is visible from all angles. It is one of the most recognisable vintage filament styles and is specifically chosen for fittings where the bulb is exposed and the filament is part of the visual design.
Is the irregular globe shape intentional or a manufacturing defect?
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Intentional. The twisted, slightly asymmetric globe body is a deliberate design choice that gives this bulb its organic, handcrafted character. Minor variations between individual bulbs — in the exact degree of twist or the precise silhouette — are a natural result of the forming process and are considered part of the aesthetic, not a flaw. If you receive a bulb that appears significantly different from the product image, contact us and we will assess it.
This is a 40W incandescent — is it energy efficient?
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No — this is a traditional tungsten incandescent bulb, chosen for the quality and depth of its light rather than energy efficiency. It consumes significantly more power than an LED equivalent and has a shorter lifespan. If energy saving is a priority, a 4W LED filament bulb will produce a similar warm tone at a fraction of the wattage. This bulb is for those who specifically want the authentic incandescent glow — the colour rendering, the dimmability, and the visual character that only a real tungsten filament produces.
Can I dim this bulb, and how low does it go?
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Yes — as a standard incandescent, this bulb is fully compatible with traditional leading-edge dimmers and dims smoothly from full brightness down to a very low glow. One of the distinctive qualities of a tungsten filament is that as it dims, the colour temperature drops further — from 2700K at full power to an even deeper amber at low settings, closer to 2200K or below. This makes it particularly effective in evening settings where you want to progressively reduce both light level and colour temperature together.
How does this compare to the other vintage filament bulbs in the range?
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The key difference is the glass body. Our other vintage filament bulbs — the ST64 teardrop, the diamond, the heart — have precise, symmetrical shapes. This twisted globe is the only one with an organic, irregular silhouette that varies slightly between units. It is also the only traditional tungsten incandescent in the range; the others use LED filament technology. If you want the most authentic vintage character — real tungsten, organic form, deep amber dimming — this is the one. If you want lower energy consumption with a similar aesthetic, choose one of the LED filament options instead.
Find compatible open fittings in our Wall Lights or Pendant Lights collection. Free delivery on orders over €50. 30-day returns.
