Match the complete ordering code
Accessory fit follows the documented model and generation. A similar product name or nominal width does not establish interchangeability.
Dimplex
Dimplex Optimyst Halogen Replacement Bulbs — Four Pack
From $72.49
Dimplex ·
Dimplex Optimyst Halogen Replacement Bulbs — Four Pack
A four-pack of Dimplex RB400 halogen replacement bulbs for the documented Optimyst service application.
$72.49
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Ordering codeRB400
Retail pack4 halogen bulbs
Accessory typeReplacement lighting
The finishing detail, thoughtfully chosen.
RB400 is the Dimplex four-pack of halogen replacement bulbs identified in the manufacturer accessory list. Order the service part by code to keep the replacement matched to the installed appliance.
The retail pack contains four bulbs. That pack quantity does not establish the number that must be replaced in every Optimyst appliance. Use the service instructions for the exact model.
This is a replacement lighting accessory, not a heater or an upgrade for a different flame-system generation. The Optimyst name alone does not establish compatibility.
The right fit starts with the exact model.
Optimyst applications that specify RB400 replacement bulbs
| Ordering code | RB400 |
|---|---|
| Retail pack | 4 halogen bulbs |
| Accessory type | Replacement lighting |
The right pieces, clearly accounted for.
| In the box | Contents & quantities |
|---|---|
| Retail pack | Four halogen replacement bulbs |
| Appliance | Not included |
Know exactly what you’re bringing home.
Exact accessory details
- Ordering code
- RB400
- Retail pack
- 4 halogen bulbs
- Accessory type
- Replacement lighting
Let’s get your project right.
Does RB400 contain one bulb or four?
The manufacturer accessory description identifies RB400 as a four-pack of halogen bulbs. One retail pack therefore contains four replacement bulbs.
Will these bulbs fit every Optimyst product?
Do not assume universal fit across Optimyst generations. Use RB400 only where the exact appliance’s parts information specifies that ordering code.
Does a four-pack mean my appliance needs four bulbs?
No. Retail pack quantity and installed service quantity are different. Check the appliance-specific service instructions before deciding how many bulbs require replacement.
Can these replace LED lighting in a newer fireplace?
The RB400 listing identifies halogen replacement bulbs. It does not authorize replacing another generation’s LED lighting or converting a different light system.
Will replacing the bulbs restore a heating fault?
These are lighting components, not a heater assembly. A heating fault needs diagnosis against the appliance service information rather than an assumption that replacement bulbs will resolve it.
Should I select a bulb only by its physical appearance?
No. Match the specified replacement part code. Similar-looking bulbs can have different electrical or thermal characteristics that are not established by a photograph.
Are voltage and wattage interchangeable between bulbs?
Do not substitute electrical ratings. The accepted RB400 evidence establishes the ordering code and four-pack format; use the exact appliance service specification for the replacement.
Can I change bulbs while the appliance is operating?
Follow the exact manufacturer service instructions, including isolation and cooling provisions. Do not handle lighting components while they are energized or hot.
Does the pack include a remote or flame cassette?
No. The listing is for the four replacement halogen bulbs. The cassette, remote and other operating components are separate.
What information should I have before ordering?
Keep the complete appliance model and its parts list available, with RB400 identified as the specified replacement. A general Optimyst product name is not sufficient to establish fit.
CONFIDENCE BEYOND THE FIRST FIRE
The right fit. The right support.
Keep the exact accessory code, appliance model and purchase record together for replacement-part and fit support. This separate accessory does not automatically inherit the fireplace’s warranty period.
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The Dimplex story
A different way to bring fire home.
Dimplex’s electric-flame story includes the original Optiflame® effect, introduced in 1988. Its continued development of electric fire experiences includes Optimyst® water-vapor technology, which combines cold water vapor and light to create a moving flame illusion.
Part of the Glen Dimplex Group, the brand offers electric fireplace designs for residential, commercial and hospitality spaces. At Hearth Outpost, explore the different forms, flame technologies and installation approaches to find the one that belongs in your project.
Visit the Dimplex Shop by Hearth Outpost