⚠ Companion Item — Radilum Customers Only

This bulb is sold only as a replacement part for Radilum fixture owners. It is not available as a standalone product for general buyers.

Existing Radilum customers: order this if you need a matching replacement bulb for your fixture.
New customers: we cannot fulfill standalone bulb orders. We will refund and not ship.
Need a general bulb? A standard E27 LED on Amazon offers faster shipping and broader compatibility for any non-Radilum fixture.

A replacement LED Edison-style bulb featuring a 4W 18K gold-wire LED filament inside clear glass. Designed to maintain the warm, vintage filament aesthetic of Radilum fixtures while drawing minimal energy. Available in two sizes to match the original bulbs in different fixtures.

Sizes

Large ∅ 6 × H 10 cm ∅ 2.4" × H 3.9" ~4W

Specifications

SKU	RDB-115404
Bulb Type	Edison-style LED filament bulb
Filament	18K gold-wire LED filament — warm vintage glow
Materials	Aluminum base · Clear glass envelope
Socket	E27 (EU/UK/AU)
Power	4W
Color Temperature	Warm white
Voltage	AC 110–240V · Universal
Intended Use	Replacement bulb for Radilum fixtures only — not a standalone product

FAQ

I'm not a Radilum customer — can I still order this? +

No. We only fulfill orders from existing Radilum fixture owners. Standalone orders from new customers will be refunded and not shipped. For a general E26/E27 LED bulb please purchase from Amazon or a local lighting supplier — you'll get faster shipping and broader compatibility for non-Radilum fixtures.

Which size matches my fixture? +

The Small (∅ 4.5 × H 7.5 cm) matches most compact Radilum E26/E27 fixtures. The Large (∅ 6 × H 10 cm) is for fixtures with visible bulbs designed to show a fuller Edison-style silhouette. If you're not sure which size your fixture takes, contact us with your original order number and we'll confirm before shipping.

What's the 18K gold-wire LED filament? +

The internal LED filament wire is plated in 18K gold. This produces a warmer visual tone in the filament itself (compared to standard silver-wire LEDs), better matching the vintage Edison aesthetic of Radilum fixtures.

Is it dimmable? +

The standard build is non-dimmable. If you specifically need a dimmable replacement bulb to match a dimmable Radilum fixture, contact us with your order number and we'll advise.

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