Optimyst Cassette Pro 500 Vapor Fireplace – 20" Built-In Water Vapor Electric Fireplace (CDFI500-RGB)

A revolutionary 20" built-in water vapor fireplace cassette that creates ultra-realistic, cool-touch flames using ultrasonic mist technology. Designed for custom fireplace builds and modular installations. <br><br>

Elevate your space with the Optimyst® Cassette Pro 500 (CDFI500-PRO)—the next evolution in electric fireplace technology. Featuring state-of-the-art ultrasonic mist, this advanced cassette produces a stunning 3D flame and smoke illusion you can actually touch. Enjoy the atmosphere of a real fire without the heat, venting, gas lines, or safety risks.

The modular design allows you to get truly creative. Combine multiple 20" (CDFI500-PRO) or 40" (CDFI1000-PRO) cassettes to build dramatic linear installations that traditional gas fireplaces simply cannot achieve. Whether you're designing a see-through fireplace, three-sided feature, or open-concept centerpiece, the possibilities are limitless.

For added convenience, pair the unit with a plumbed water supply kit (sold separately) for continuous water feeding and a seamless, maintenance-light installation. This model must be paired with an Optimyst® ProBox (X-CDFI-BX1000 or X-CDFI-BX1500). If you're looking for the standalone version, select the Optimyst® RGB Cassette 20" (CDFI500-PRO-RBG).

Enjoy customizable flame width, modular spacers, and a safe cool-touch ambiance—perfect for homes, hospitality spaces, and modern architectural builds.

⭐ Key Features 

• Realistic Water Vapor Flames: Ultrasonic technology creates stunningly lifelike flame and smoke effects.

• Modular Design: Combine multiple cassettes (20" & 40") to create endless linear fireplace configurations.

• Customizable Flame Width: Includes spacers and slots for adjustable flame size.

• No Heat, No Venting Needed: Safe, cool-touch operation ideal for homes, condos, hotels, lobbies, and commercial spaces.

• Continuous Water Option: Compatible with the plumbed water supply kit (CDFIPLUMB-KIT) for uninterrupted operation.

• Multiple Installation Types: Perfect for see-through, 3-sided, open concept, and custom built-in fireplace designs.

• ProBox Required: This model must be installed with an Optimyst® ProBox (X-CDFI-BX1000 or X-CDFI-BX1500).

• 2-Year Limited Warranty for peace of mind.

⭐ Technical Specifications

• Model Name: Optimyst Cassette

• Model Number: CDFI500-PRO

• Installation Type: Built-In

• BTU Output: 785 BTU

• Voltage: 120V

• Wattage: 230W

• Thermostat: No

• Adjustable Brightness: No

• Adjustable Flame Speed: Yes

• Product Width: 20 in

• Product Depth: 12 in

• Product Height: 9.5 in

• Product Weight: 22 lbs

• Warranty: 2-year limited

Free shipping across the contiguous US. Ships in 3-7 days from our facility.

All shipments are insured and tracked. You'll receive a tracking number via email within 24 hours of dispatch.

Stock items may be returned within 10 days of purchase when unused and in their original packaging. A 10% restocking fee and return shipping apply. See our return policy for details and help with damaged or incorrect orders.

Coverage depends on the product and manufacturer. See ExceptionalFire’s warranty terms for coverage by category and how manufacturer warranties apply.

For help with a claim, contact our team with your order number and photos.