TL;DR — A working summary

Linear fireplaces are direct-vent gas units, typically ranging from 48″ to 120″ in viewable length, with rear or top venting through a coaxial pipe to an exterior wall or roof. The design decisions are: width and ratio, viewing height, vent path, surround material, glass type (clear or pebble bed), media (logs, stones, glass), control system (switch, remote, smart-home integration), and any supplemental heat or fan. Lead times for premium units run 8–16 weeks. Code requires direct-vent in nearly all interior applications; vent-free is restricted in most DFW municipalities.

Dimensional vocabulary

A linear fireplace is described by:

• **Viewable length:** the width of the visible flame opening, typically 48″, 60″, 72″, 84″, 96″, or 120″
• **Viewable height:** typically 12″–24″ for standard units; some specialty units to 36″
• **Cabinet depth:** the unit’s interior depth from the glass to the back; typically 12″–18″
• **Wall depth:** total wall thickness needed to recess the unit; typically 14″–22″
• **Vent diameter:** typically 4″ inner / 6 5/8″ outer for coaxial direct-vent

Common ratios:

• 48″ × 12″ — minimal, intimate
• 60″ × 15″ — common contemporary residential
• 72″ × 18″ — the most-specified premium ratio
• 84″ × 16″ — long horizontal mark
• 96″ × 20″ — feature-scale
• 120″ × 24″+ — estate or commercial scale

Vent path

Direct-vent units vent through coaxial piping that combines combustion air intake and exhaust:

• **Through-wall:** preferred for ground-floor installations on exterior walls
• **Through-roof:** required when no exterior wall path is available; longer runs
• **Termination:** clearances from windows, doors, and operable openings per IRC
• **Vertical and horizontal limits:** manufacturer-specific; typically 40′ equivalent run maximum

The architectural challenge is keeping the vent path clean. Termination on a visible facade should be designed for sympathetically — often integrated into a stone band or detailed termination cap.

Surround design

The surround is the architectural envelope around the firebox. Typical specifications:

• **Stone:** limestone, marble, travertine, or quartz; matched to the room’s material palette
• **Tile:** large-format porcelain, hand-formed ceramic, or specialty Italian
• **Plaster:** smooth Venetian, integral lime, or hand-troweled
• **Concrete:** poured-in-place, board-formed, or precast
• **Wood:** generally not adjacent to the firebox glass; maintained at code clearances
• **Drywall with paint:** the simplest contemporary surround; minimal architectural statement

Hearth treatment varies:

• **Flush with the floor:** the most contemporary, no raised hearth
• **Raised:** 6″–18″ stone or material that becomes a seating element
• **None:** firebox set high above the floor, no hearth at all (loft or feature applications)

Media options

The bed of the firebox can hold:

• **Logs (ceramic, hand-painted):** traditional appearance
• **Glass beads:** clear, smoky, or color-matched
• **Stones (river rock, lava, custom):** natural look, often matching exterior architecture
• **Smooth obsidian or specialty media:** designer applications

Media affects flame appearance significantly. Glass beads produce the cleanest, most modern flame; stones produce a more textured fire.

Glass type

• **Clear single-pane:** the most common; clean view
• **Clear double-pane:** higher efficiency, slightly less direct view
• **Pebble bed glass:** decorative texture, used for design feature applications
• **Tinted or specialty:** rare; specific design applications

The exterior pane gets hot; clearances and child-safety screens are part of code compliance.

Controls

Specification options:

• **Wall switch:** the most basic; on/off
• **Remote control:** standard for premium units
• **Wall-mounted touchpad:** integrated control surface
• **Smart-home integration:** Lutron, Crestron, Control4, Savant — increasingly standard in premium installations
• **Voice control:** through the smart-home system

Flame height adjustment, fan speed, accent lighting, and ember bed lighting are typically variable through the control system.

Comparison: Specification by application

| Application | Suggested length | Mounting | Surround |

|—|—|—|—|

| Bedroom feature | 48″ × 12″ | Wall-mounted, flush hearth | Stone or plaster |

| Open-plan living | 72″ × 18″ or 84″ × 16″ | Recessed, flush hearth | Premium stone, tile |

| Great-room two-story | 96″ or 120″ | Recessed, no hearth (high mount) | Architectural surround |

| Outdoor pavilion | Custom outdoor unit | Built-in masonry | Cast stone or natural |

| Hotel-style bath | 36″ × 12″ | High wall mount | Tile or specialty material |

Lead times and procurement

Premium linear gas units have meaningful lead times:

• Standard sizes from major manufacturers: 8–12 weeks
• Custom sizes or specialty configurations: 12–24 weeks
• Imported European units (some specifications): 16–32 weeks

Procurement should be initiated at the schematic design phase if the linear fireplace is a feature element.

Coordination with other trades

Specifying a linear fireplace requires coordination with:

• **Structural:** wall framing for the recessed cabinet and vent path
• **Mechanical:** gas line sizing, location, and shutoff
• **Electrical:** ignition, fan (where applicable), accent lighting
• **Drywall and paint:** clearances around the framed opening
• **Stone or surround installer:** the specialty trade installing the visible material
• **Smart home:** integration with the home automation system

The earlier the fireplace coordination begins, the cleaner the installation. Decisions made in design development save rework in construction.

Common specification mistakes

• **Wall thickness too thin:** standard 2×4 framing doesn’t accommodate most linear units; 2×6 or built-out walls are typical
• **Vent path through habitable space:** the vent termination location is sometimes overlooked until late in design, forcing compromises
• **Surround material clearances:** combustible materials must maintain manufacturer clearances; this affects mantel and surround design
• **Hearth height assumptions:** flush hearths require structural floor accommodation
• **Power planning:** smart-home integration needs dedicated low-voltage runs

When to call us

For specification consultation, vent path coordination, smart-home integration planning, or product walk-throughs, we work directly with architects and designers. We carry full lines from major manufacturers and offer atelier-level installation across the Dallas market.

By appointment, 469-992-4912.

FAQ

Standard sizes 8–12 weeks. Custom or specialty configurations 12–24 weeks. Imported units 16–32 weeks.

Yes, with through-roof venting. Through-roof installations require additional ceiling and roof coordination but are common.

The mid-size units (60″–72″) produce 18,000–35,000 BTU. Useful as supplemental heat in the room they serve, not primary heat for the home.

Restricted in most Dallas-area municipalities. Direct-vent is the appropriate specification for nearly all interior applications.

Yes, by appointment. Our atelier shows working installations and product samples.

Outdoor-rated units are available with appropriate masonry installation. Setbacks, weather sealing, and code compliance are part of the design.

Yes — Lutron, Crestron, Control4, and Savant integrations are standard.

Visit by appointment

Call 469-992-4912 or schedule by appointment. The atelier serves architects, designers, and homeowners across the Dallas market.

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Internal links

• [Linear Fireplace Service](https://spacefireplaceservices.com/linear-fireplace/)
• [Gas Conversion">Wood-to-Gas Conversion](https://spacefireplaceservices.com/learn/wood-to-gas-conversion-process-dallas/)
• [Ventless vs Direct-Vent in TX Code](https://spacefireplaceservices.com/learn/ventless-vs-direct-vent-fireplace-tx-code/)
• [Trade Pro Program](https://spacefireplaceservices.com/learn/trade-pro-program-designers-architects/)
• [frisco/" class="auto-entity-link" data-term="Newman Village">Newman Village Frisco](https://spacefireplaceservices.com/areas/newman-village-frisco/)

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