Order Your Custom Liners

8 Robust Liners to Choose From
Initials	Full name	Fireplace application
EFF	Endless Flames Firebacks	All four fireplace configurations: standard three-panel, See-Through, L-shaped, and Peninsula.
SSL	Sunset Liner	All four fireplace configurations: standard three-panel, See-Through, L-shaped, and Peninsula.
FFL	FireFall Liner	All four fireplace configurations: standard three-panel, See-Through, L-shaped, and Peninsula.
EPL	Enameled Porcelain Liner	All four fireplace configurations: standard three-panel, See-Through, L-shaped, and Peninsula.
SPFL-SS	Simulated Pillar Fireplace Liner – Sunset	Three-sided fireboxes only (left side, back wall, and right side).
SPFL-FF	Simulated Pillar Fireplace Liner – FireFall	Three-sided fireboxes only (left side, back wall, and right side).
SPFL-EP	Simulated Pillar Fireplace Liner – Porcelain	Three-sided fireboxes only (left side, back wall, and right side).
SPFL-Brick	Simulated Pillar Fireplace Liner – Brick	Three-sided fireboxes only. The customer’s existing brick back wall stays as is; Robust supplies liners for the two side walls.

Gas-log sets may be used only with EPL, EFF, and SPFL-EP. Follow the burner and gas-log sizing instructions when ordering.

Choose your view

Robust Liner designs

Three panels line a standard firebox. Other fireplace layouts use the applicable walls.

01 / Stainless steel

SPFL-SS

Our most popular design. The reflective patterned panels extend the flame visually across the back and sides.

Flames reflected by decorative liner panels inside a fireplace

02 / Fire Fall

SPFL-FF

A decorative Fire Fall interpretation for a lively, layered flame effect.

EPL glossy black enameled porcelain panels reflecting the flames against a dark background

03 / Glossy black · +$400

EPL

All three walls are reflective black enameled porcelain. EPL adds $400 to the $3,000 base price, for a $3,400 base total before any size charges.

EFF Endless Flames Firebacks with flame reflections across the liner panels

04 / Endless flames

EFF

Endless Flames Firebacks, the first Robust Liner design brought to market, reflects the fire across the panels.

See the effect

Watch the walls come alive.

This SPFL-SS installation shows how the reflective panels change the appearance of a working fireplace.

SPFL-SS · Dancing flames surround sunset reflections on both sides and back

See How Our Liners look in Everyday Spaces

SPFL-SS liner in an L-shaped corner fireplace, with flames visible through the front and side glass — SPFL-SS · L-shaped corner fireplace

Full view of EPL black porcelain liner with burning gas logs in a white fireplace beneath a television — EPL · burning gas logs

SPFL-BrickSPFL-Brick requires an existing, attractive brick-pattern back wall in suitable condition. Robust will review the wall before recommending this design and approving the order.

Before & after

SPFL-SS gives an existing fireplace new life.

The same marble-faced fireplace before and after its SPFL-SS installation.

SPFL-SS installation comparison: finished fireplace with reflective panels and flames at the top; original empty firebox with stained brick walls below — SPFL-SS · After (top) and before (bottom)

Before & after

A corner fireplace, transformed.

The same fireplace before installation and after its EFF Endless Flames Firebacks renovation.

Before: empty corner fireplace with exposed, darkened brick firebox beneath the artwork — Before · existing corner fireplace

After: the same corner fireplace with EFF and flames visible from both sides — After · EFF Endless Flames Firebacks

From existing fireplace to new centerpiece

How an order develops

Check the fireplace

Have the chimney and firebox cleaned and inspected, and confirm a suitable gas connection.

Safety Checklist

Select your Liner type and have your required measurements to proceed

Follow the three-panel schematic and measurement instructions to record the firebox dimensions, usable front opening, gas-pipe location, and liner design. The correct Robust burner size and price are automatically added from the front-opening measurement. Gas-log sets may be used only with EPL, EFF, and SPFL-EP liners. Use the “Burner and Gas-Log Sizing by Front Opening Measurement” table in the General Orientation section directly below to identify the required gas-log size, then request that exact size from a nearby fireplace shop. There is no need to give the dealer your fireplace-opening measurement. Robust does not supply gas-log sets. Each set needs a burner and grate of the same listed size (for example, 24″ gas logs with a 24″ burner and 24″ grate), so the separately priced Robust burner is not added. A qualified installer/handyman can assist.

Fabricate and install

Robust reviews your measurements, drawing, and final price before accepting the order. After approval, Robust emails an invoice with payment instructions. Once full payment is confirmed and funds are available, Robust assigns a job number and fabricates the liners from the approved measurements. A qualified installer/handyman must read and follow Robust Liner installation instructions included with the shipment when completing the installation and gas work. For any questions, contact Robust before proceeding.

Financial Processing of Orders ↗Explore Your Estimate Price Contact Robust

General orientation

What Robust provides.

A finished renovation can include a Robust Flat Pan Burner, media such as fire glass or ceramic shapes, and the FireGuard Retainer Glass (FGRG), which is optional but recommended for better functioning and appearance of the flames. Gas-log sets are accepted only with EPL, EFF, and SPFL-EP liners. Robust does not supply gas-log sets. Customers choosing gas logs must use the “Burner and Gas-Log Sizing by Front Opening Measurement” table beside this text and request the exact listed gas-log size from a nearby fireplace shop; there is no need to share the fireplace-opening measurement with the dealer. The gas-log set must have a burner and grate matching its listed size: for example, a 24″ gas-log set uses a 24″ burner and a 24″ grate. Its burner replaces the separately priced Robust burner.

FireGuard Retainer Glass (FGRG): Positioned at the front, inside the firebox, this clear tempered glass panel helps reduce cold room air entering the firebox. This encourages flames to rise straight and steady, reducing the chance of them leaning backward or touching the rear liner. Flames must not touch the rear liner.

Burner clearance: Maintain 4–6 inches of clearance between the burner and the back panel.

Clear FireGuard Retainer Glass panel standing on two metal supports — Full panel

Close view of the clear tempered glass and its angled metal support — Support detail

FireGuard Retainer Glass is optional but recommended for better functioning and appearance of the flames. Robust can supply custom-sized FGRG made from 3/8″-thick clear tempered glass, with the width automatically calculated as the front opening minus ⅛″. The price is $200.00 for a panel up to 36″ wide, 4″ tall for fireplace heights up to 20″, or 6″ tall above 20″, including a pair of stands. It can be shipped with the liners or separately. Customers may also arrange to obtain it locally. Contact Robust to arrange the custom size.

The three-panel EPL (Enameled Porcelain Liner) also allows wood burning in a fireplace approved for burning wood. Its enameled panels are fired at temperatures ranging from 1,400°F to 1,650°F.

Burner and Gas-Log Sizing by Front Opening Measurement

Front Opening Measurement	Robust burner	Gas-log set	Robust Burner Price
Up to 30″	20″	18″	$280
More than 30″ up to 36″	26″	24″	$340
More than 36″ up to 42″	32″	30″	$400
More than 42″ up to 48″	38″	36″	$460

Robust Flat Pan Burner (RFPB)

Designed to complement Robust Liners, the RFPB combines downward-facing gas ports, a solid steel pan, and a low, flat profile to create a flowing flame display.

Downward-facing gas ports

The gas holes face downward toward the pan, encouraging neighboring flames to link into a coordinated, dancing pattern that complements the liner’s simulated flames and reflections.

Solid steel pan

A steel pan sits approximately ½″ beneath the burner pipe, separating the burner discharge from the firebox floor. The downward-facing ports also help keep #30 silica sand from settling directly into the gas holes when sand is specified for the approved fuel and installation. Approved fire glass may be used with or without #30 silica sand. #30 silica sand is also suitable for use with ceramic shapes and gas logs when specified for the approved fuel and installation.

Wider flame display

Wider than the corresponding gas-log burner, the RFPB spreads the flame display across the fireplace, bringing live flames and the liner’s reflected patterns together.

More room for decorative media

The flat design accommodates approved fire glass, beads, and ceramic shapes without requiring tall piles of media, preserving the firebox’s open appearance.

Required sizing: Only the burner and gas-log sizes listed in this table are accepted. A larger or smaller size can cause operating problems, and any resulting damage or performance issue is not covered by the Robust warranty.

Robust burners are 2″ larger than the corresponding gas-log burners; both use the same orifice size for the corresponding opening. Robust Flat Pan Burners include the proper orifices, fittings, and flex connectors. Robust burners are priced separately from the liner and automatically added unless an eligible EPL, EFF, or SPFL-EP liner uses a gas-log set. Robust does not supply gas-log sets. Taxes and other applicable charges are additional.

Fireplace professionals

Offer a complete
renovation

SPFL-SS Robust Liner with dancing flames in a finished fireplace — SPFL-SS Model of Robust Liner

Dealers can help homeowners select, measure, and install the complete fireplace solution. When an established dealer places and processes the order, Robust ships the custom-fabricated liner to the dealer’s shop. Approved dealers receive 40% off the current liner MSRP; shipping is excluded from the discount. Each dealer is required to display at least one Robust Liner pattern; Robust provides that display liner free of charge. New dealers must submit a dealer application form; once approved, they may work directly with Robust.

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