Built-in Firebox

Find the Built-in Firebox, a versatile fireplace insert offering efficient heating and a sleek, contemporary design for your space. Customize it effortlessly to complement your home while enhancing warmth and comfort.

The Best Built-in Firebox

Here are some of the best Built-in Fireboxes on Fireplace Distributor:

Dimplex 60 Inch Opti-Myst Pro 1500 Built-In Electric Firebox

The Dimplex 60-Inch Opti-Myst Pro 1500 Built-In Electric Firebox blends innovative design with advanced technology, creating a captivating focal point for your home. Its ultrasonic-powered flame and smoke effects deliver the charm of a traditional fireplace without the maintenance of real flames. 

Dimplex Ignite Aspire 48 Inch Built-In Electric Firebox

The Dimplex Ignite Aspire 48-Inch Built-In Electric Firebox elevates the fireplace experience with cutting-edge features that blend style, realism, and convenience. Its Dynamic-Fire Flame Effect creates vibrant flames with glowing, pulsing logs and embers, delivering a truly lifelike display. 

Why Built-in Fireboxes Offer the Foundation for Custom Fireplaces

A built-in firebox is the heart of any high-performance fireplace installation—providing the structure, safety, and functionality that allow for seamless design integration. Whether you’re creating a full custom hearth, a media wall, or a minimalist modern feature, these fireboxes are designed to be recessed into framing, delivering clean lines and long-lasting performance in both residential and commercial spaces.

What Makes This Built-in Firebox Collection Unique

This collection features built-in fireboxes in electric, gas, and vent-free formats, hand-selected for durability, heat efficiency, and easy compatibility with custom surrounds. From classic log sets to sleek linear models, each unit is designed for flush-mount or framed installation, offering flexible sizing and safe, tested construction. These fireboxes serve as the perfect foundation for homeowners, designers, and contractors building out modern fireplaces from the inside out.

Built-in Firebox Benefits Customers Actually Care About

Seamless Integration Into Custom Builds

Each built-in firebox is engineered to install directly into wood framing or masonry, allowing for a clean, finished look that works with tile, stone, shiplap, or drywall.

Designed for Performance and Longevity

Crafted with high-heat materials and advanced burner or flame technology, these fireboxes are made for consistent performance and lasting durability.

Multiple Fuel and Style Options

Choose from electric fireboxes with customizable flame settings, vent-free gas units with real heat output, or traditional firebox models with logs and ember beds—all ready for integration into your design vision.

Shop Built-in Fireboxes at Fireplace Distributor

Ready to build your fireplace from the inside out? Browse our curated collection of built-in fireboxes and find the right unit to anchor your project—whether electric, gas, or ventless. These foundational components are in stock and ready to ship—get yours now and bring your custom fireplace to life.