Radilum

LED Light Bulb E27 4W Small

SKU: RDB-174630-01

$19.00

$19.00 Save $-19.00 (%)

Tax included. Shipping calculated at checkout.

Free standard shipping to the US, Canada, EU, UK, AU & UAE

Select Size

D 4.5cm x H 7.5cm / ∅ 1.8″ x H 3″ (E27)

Select Quantity

1 light bulb (No delivery if purchased separately)

5 light bulbs (No delivery if purchased separately)

10 light bulbs (No delivery if purchased separately)

Select Kelvin Range

Warm Light

💡 Use coupon code RDSHN to enjoy 10% off

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Frequently bought together

This item: LED Light Bulb E27 4W SmallD 4.5cm x H 7.5cm / ∅ 1.8″ x H 3″ (E27) / 1 light bulb (No delivery if purchased separately) / Warm Light

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30-day returnsUninstalled, original packaging · RA code Free shippingUS · CA · EU · UK · AU · UAE, insured Made your way20+ finishes · Pantone · custom size & stone For designers3D files on request · spec sheets · trade pricing

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⚠ 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

Small ∅ 4.5 × H 7.5 cm∅ 1.8" × H 3"~4W

Specifications

SKU	RDB-174630
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

What are the exact dimensions of this bulb?

The Small size measures 4.5 cm diameter × 7.5 cm height (1.8″ × 3″). It has an E27 socket and features an 18K gold-wire LED filament inside a clear glass envelope.

What voltage does this bulb require?

It operates on AC 110–240V, so it works universally across different regions.

Is this bulb a replacement part or a standalone product?

This is a replacement bulb for existing Radilum fixture owners only. New customers cannot order it standalone—we recommend a standard E27 LED bulb from other retailers for non-Radilum fixtures.

Still unsure? Ask a question — answered within 1 business day.

CARE

Dust with a soft, dry cloth.
To protect finish, we do not recommend the use of household cleaners or abrasives.
Do not exceed specified wattage.

SHIPPING & RETURN POLICY

Enjoy free standard shipping on every order, insured and tracked to your door. Eligible items may be returned within 30 days of receipt. Made-to-order items are not eligible for return.

In our workshop

Made to order, shipped insured

Every fixture is made when you order it — usually 1–3 weeks in our workshop, a little longer for hand-blown glass and large pieces. Then it ships insured by sea, customs handled by us, with tracking to your door: most orders arrive 5–7 weeks after ordering. Need it sooner? Express air takes 2–4 weeks in total, priced at checkout.

Freestandard shipping · US, Canada, EU, UK, Australia, UAE7 daysto report transit damage — we replace or repair, free48 hfree cancellation before production starts

Shipping & returns policy →

Made your way

Nothing here is fixed

Change the finish, the colour, the stone, the size — or send us a shape.

Design services

Free whole-home lighting plans

Send floor plans or photos; a Radilum designer returns a room-by-room plan with fixture, size and mounting height — usually within 2 business days.

The glass story

Shaped by hand, cooled slowly

Our glass shades are gathered from the furnace and blown or pressed by hand, then annealed slowly so the colour stays even and the wall stays strong. Small bubbles and slight differences between pieces are not flaws — they are how you know a hand made it.

Murano & art glassChandeliers, pendants and sconces in hand-blown glass.Custom Pantone colourPainted to your exact code, for this and any fixture.Whole Home DesignPlanning a foyer, a stairwell and a dining room together? Our designers draw the plan for free.

Island Sizing GuidePendant count, spacing and drop height for your island.Lighting Size & Installation GuideDrop heights, canopy types, sloped ceilings.Stone GuideMarble, travertine, alabaster — under light, and how to care for them.Finishes LibraryEvery metal finish, photographed the same way.

Complete the room

Pieces that live well with this piece

From the same Glass line — chosen so the room reads as one.

Shop the series

Welcome offer

Ten percent off your first order

CodeRDSHN

Enter the code at checkout. Applies to the full order, including custom finishes.

Trade & designers

Trade Program

Net pricing on every fixture, finish samples, 3D models on request and a dedicated project contact — for interior designers, architects, hospitality and developers.

Apply for a trade account

Delivery destination

LED Light Bulb E27 4W Small