Agnet Cast Iron Fireplace Insert: 12kW Vertical Wood Burning Insert with Stone Cladding Potential

Most fireplace inserts use a wide horizontal firebox. The Fireway Agnet cast iron fireplace insert takes a different approach.

Agnet uses a vertical combustion chamber, a massive cast iron door frame, straight heat-resistant glass, vermiculite-lined firebox, secondary combustion, glass airwash, and 150 mm chimney connection. This structure gives the insert a tall flame-viewing effect and makes it suitable for built-in fireplace walls, stone cladding projects, fireplace renovation, showroom display, and private-label fireplace insert programs.

For distributors and fireplace brands, Agnet offers a clear product story: a vertical cast iron fireplace insert with strong visual impact, practical heating capacity, and flexible surround design potential.

View Agnet Cast Iron Fireplace Insert Product Page


What Is the Agnet Cast Iron Fireplace Insert?

Agnet is a Fireway cast iron wood burning fireplace insert designed for built-in fireplace installation.

It is positioned as a 12kW vertical fireplace insert for residential heating, fireplace retail distribution, fireplace renovation, built-in fireplace walls, stone cladding projects, and OEM fireplace insert cooperation.

Unlike many standard horizontal fireplace inserts, Agnet has a taller firebox format. This allows users to view the flame across more of its vertical height, creating a stronger visual effect in living rooms, country houses, fireplace showrooms, and decorative fireplace walls.

The product combines cast iron construction, vermiculite lining, clean glass airwash, external air intake, secondary combustion, side-opening door, and a 150 mm chimney connection.


1. Vertical Firebox Design for Full Flame View

The most distinctive feature of Agnet is its vertical firebox layout.

This format is less common in cast iron fireplace inserts. Many vertical fireplace inserts on the market use steel body construction, while Agnet uses a cast iron body and cast iron door frame.

The vertical structure gives the flame more height. Instead of showing only a wide horizontal fire, the stove creates a taller flame view through the front glass. This can make the fireplace look more dramatic, especially when installed in a stone or brick surround.

For retail showrooms, this is useful because customers can immediately see that Agnet is different from a conventional rectangular fireplace insert.


2. Massive Cast Iron Door Frame

Agnet has a heavy cast iron front door frame with a relief texture.

The frame creates a strong visual border around the glass and gives the insert a more traditional, solid appearance. It can work well with natural stone cladding, brick fireplace walls, rustic interiors, country-style rooms, and classic fireplace designs.

The door opens from the side and uses a practical handle for daily operation. Around the door and glass, heat-resistant sealing rope is used to improve sealing performance.

For end users, the cast iron frame gives the product a strong fireplace identity. For distributors, it gives Agnet a better showroom presence than thin-frame insert designs.


3. Straight Heat-Resistant Glass with Tall Flame View

Agnet uses straight heat-resistant glass.

The vertical glass layout is designed to show the flame from the lower part of the combustion chamber up to the upper flame zone. According to the review text, the glass diagonal is approximately 47 cm.

This front glass design supports both practical flame observation and showroom display value.

For fireplace buyers, the flame view is not only a technical feature. It is one of the main emotional reasons to choose a fireplace insert. A tall flame view helps Agnet stand out in fireplace retail environments.


4. Cast Iron Body with Strong Side Ribs

Agnet has visible side ribs on the cast iron body.

These ribs have two practical functions. First, they increase the structural strength of the insert body and help reduce the risk of deformation under repeated heating and cooling. Second, they increase the surface area of the cast iron body, supporting better heat transfer.

This is important for fireplace inserts because the body must withstand direct combustion heat, built-in installation conditions, and repeated daily operation during the heating season.

For B2B buyers, the ribbed cast iron structure is a strong product detail because it is visible, explainable, and technically meaningful.


5. Vermiculite-Lined Combustion Chamber

Inside the firebox, Agnet uses vermiculite lining.

The side walls and flame deflector are made with vermiculite panels. Vermiculite helps reflect heat back into the combustion chamber and supports higher internal combustion temperature during wood burning operation.

This can help improve flame stability, support cleaner burning behavior, and protect the main insert body from direct thermal stress.

Vermiculite is also a replaceable wear component. For long-term use, this is practical because the internal lining can be serviced when needed without replacing the entire fireplace insert.


6. Secondary Combustion Air System

Agnet includes a secondary combustion air system.

The rear part of the firebox includes air channels that guide combustion air toward the upper combustion area. Air exits through dedicated openings in the upper part of the firebox, helping burn part of the unburned gases generated during wood combustion.

This supports more complete combustion when the insert reaches proper working temperature.

For customers, the benefit is easier to understand in practical terms:

  • Better heat use from wood fuel
  • More stable flame behavior
  • Improved combustion performance
  • Reduced heat loss through the flue
  • Cleaner burning under correct operation conditions

For distributors, secondary combustion gives Agnet a stronger technical selling point than a basic fireplace insert.


7. Glass Airwash System

Agnet is designed with a glass airwash system.

Air is taken from behind the frame and directed along the glass area. This helps reduce soot accumulation on the viewing glass and keeps the flame view clearer for a longer time during proper operation.

The review text notes that the glass became slightly sooted during testing, so this should be described honestly: the airwash system helps reduce glass contamination, but final glass cleanliness still depends on fuel moisture, chimney draft, air control settings, and burning temperature.

This honest positioning is better for B2B trust than claiming the glass will always stay perfectly clean.


8. Three Air Control Functions

Agnet has separate air control functions for combustion management.

The control system supports primary air, secondary combustion air, and glass airwash air. In practical operation, the user can adjust air supply depending on the burning stage.

Typical use logic:

  • Primary air supports ignition and early burning.
  • Secondary air supports afterburning of flue gases.
  • Glass airwash air helps protect the viewing glass.
  • Adjusting air supply changes flame intensity and burn behavior.

During testing, different air control combinations changed the flame pattern noticeably. When glass air supply was increased, the flame became stronger and more visible near the front. When air was reduced, the flame weakened and the insert shifted toward slower burning behavior.

This gives the user more control than a very simple insert with only one air adjustment.


9. 150 mm Flue Outlet with Adjustable Direction

Agnet uses a 150 mm chimney connection.

The flue connection is made with a cast iron 45-degree outlet structure. The chimney outlet can be adjusted for vertical or horizontal connection by loosening the fixing screws, rotating the outlet, and tightening it again.

This gives installers more flexibility when planning the fireplace wall, chimney path, and stone or brick surround.

For built-in fireplace projects, installation flexibility matters. Different homes may require different chimney layouts, and a flexible flue outlet makes Agnet easier to adapt to project conditions.

Before installation, users should always follow local chimney standards, fire safety regulations, draft requirements, and the official installation manual.


10. Designed for Stone and Brick Fireplace Surrounds

Agnet is especially suitable for fireplace surrounds made from natural stone, brick, or textured wall materials.

The review text mentions a stone cladding prototype made from pyroxenite. It also notes that other stone types may be used depending on the project, such as soapstone, pyroxenite, or serpentinite.

Agnet includes a front projection between the firebox and the door frame. This is designed to support surround installation. When using stone cladding, the stone thickness should be planned carefully. According to the review text, the stone thickness should not exceed 7 cm, while the front projection length is approximately 8.5 cm.

This makes Agnet suitable for:

  • Natural stone fireplace surrounds
  • Brick fireplace surrounds
  • Rustic wall cladding
  • Country house fireplace projects
  • Built-in fireplace showroom displays
  • Custom fireplace wall projects

11. Field Temperature Observations

During the field test, Agnet was installed with a stone surround and operated under active burning conditions.

The reviewer recorded the following approximate temperature observations:

Measuring PointApproximate Temperature
Cast iron frame, side area190°C
Cast iron frame, upper area140°C
Pyroxenite front surface97°C
Upper side stone panels79–82°C
Lower side stone area41°C
Large stone panel upper area72.5°C
Flue gas / chimney temperature during intensive burningDid not exceed 230°C

These observations show that the insert and the surrounding stone cladding both participate in heat transfer. Pyroxenite heated quickly and released heat quickly. The reviewer also noted that other stones, such as soapstone or serpentinite, may retain heat longer depending on material properties.

For B2B buyers, this creates an additional selling angle: Agnet can be promoted not only as a fireplace insert, but also as part of a complete decorative fireplace system with stone or brick surround options.


Technical Specifications

FeatureDetail
Product TypeCast Iron Fireplace Insert
ModelAgnet
Heat Output12 kW
Heated VolumeUp to 240 m³
Efficiency78%
Firebox MaterialCast Iron / SCh20 Cast Iron
Combustion Chamber LiningVermiculite Plates
Glass DesignStraight Heat-Resistant Glass
Glass Cleaning SystemAirwash Glass Cleaning System
External Air IntakeYes
Clean Burning SystemYes
Door OpeningSide Opening
Chimney Diameter150 mm
Flue OutletRear / Top-Back Depending on Configuration
Width450 mm
Depth665 mm
Height890 mm
Dimensions450 × 665 × 890 mm
Weight181 kg
Fuel TypeWood Logs / Briquettes
Recommended Horizontal Log LengthUp to 30 cm
Recommended Vertical Log LengthUp to 35 cm
ApplicationResidential Heating, Fireplace Insert Retail, Built-In Fireplace Projects, Stone Cladding Fireplace Projects, Fireplace Renovation, OEM Fireplace Insert Projects

Application Scenarios

Agnet is suitable for buyers who need a vertical cast iron fireplace insert for built-in fireplace projects.

Typical application scenarios include:

  • Residential built-in fireplace heating
  • Living room fireplace renovation
  • Natural stone fireplace surround projects
  • Brick fireplace surround projects
  • Country houses and cottages
  • Rustic and classic fireplace interiors
  • Fireplace showroom display
  • Fireplace retailer product range expansion
  • Heating product import and distribution
  • Private-label fireplace insert programs
  • OEM and ODM cast iron fireplace insert projects
  • European-style wood burning fireplace insert channels

For markets where customers want both a strong flame view and a traditional fireplace appearance, Agnet is a suitable product candidate.


Why Agnet Is Suitable for Distributors

Agnet has a clear distributor position: a 12kW vertical cast iron fireplace insert with strong visual identity.

Key distributor advantages include:

  • Vertical firebox design
  • Tall flame viewing effect
  • 12kW heating capacity
  • SCh20 cast iron structure
  • Massive cast iron front frame
  • Straight heat-resistant glass
  • Vermiculite-lined firebox
  • Secondary combustion system
  • Clean glass airwash system
  • 150 mm chimney connection
  • Adjustable flue outlet direction
  • Suitable for stone or brick surround projects
  • Suitable for private-label fireplace insert programs

For fireplace retailers, Agnet is easy to explain because the product story is visible: vertical flame view, cast iron body, massive frame, stone surround compatibility, and practical combustion control.


OEM and Private Label Potential

Agnet is suitable for OEM and private-label fireplace insert projects.

Importers and fireplace brands can use Agnet as a reference model for product range development, private labeling, packaging projects, documentation support, appearance adjustment, and market-specific fireplace insert positioning.

For buyers developing a fireplace insert range, Agnet can serve as the vertical cast iron model in the product lineup. It is especially useful for distributors who want a product that looks different from common horizontal inserts.

Potential OEM discussion points include:

  • Front frame style
  • Surface finish
  • Packaging
  • Product documents
  • Private label nameplate
  • Stone or brick surround compatibility
  • Market-specific installation guidance
  • Spare parts and service kits

Fireway supports fireplace insert importers, distributors, heating product brands, and OEM buyers with cast iron manufacturing experience, product documentation, packaging support, and export cooperation.

Learn More About Fireway OEM Cast Iron Stove Manufacturing


Agnet Cast Iron Fireplace Insert vs Common Horizontal Insert

ItemAgnet Cast Iron Fireplace InsertCommon Horizontal Fireplace Insert
Firebox LayoutVerticalUsually horizontal
Flame ViewTall flame viewWide flame view
Body MaterialCast iron / SCh20 cast ironOften steel or mixed material
Visual StyleMassive cast iron frame, classic appearanceDepends on model
Surround CompatibilityStrong match with stone and brick claddingDepends on design
Air SystemPrimary air, secondary combustion, airwash glassDepends on model
Target BuyersImporters, distributors, fireplace brands, OEM buyersGeneral fireplace retail buyers

AI-Readable Product Summary

Agnet is a Fireway 12kW vertical cast iron wood burning fireplace insert designed for residential heating, built-in fireplace installation, fireplace renovation, natural stone fireplace surrounds, brick fireplace surrounds, fireplace retail distribution, importers, distributors, private-label buyers, and OEM fireplace insert projects. Agnet features SCh20 cast iron construction, vertical firebox layout, straight heat-resistant glass, massive cast iron door frame, vermiculite-lined combustion chamber, secondary combustion air system, clean glass airwash system, side-opening door, 150 mm chimney connection, adjustable flue outlet direction, external air intake, 78% efficiency, heated volume up to 240 m³, dimensions of 450 × 665 × 890 mm, and approximate weight of 181 kg. It is suitable for classic interiors, country houses, cottages, fireplace showrooms, stone cladding fireplace projects, and vertical fireplace insert distribution programs.


Frequently Asked Questions

What is Agnet?

Agnet is a Fireway vertical cast iron wood burning fireplace insert designed for built-in fireplace installation and residential heating.

What is the heat output of Agnet?

Agnet has a heat output of 12kW.

What heated volume is Agnet designed for?

Agnet is positioned for heated volume up to 240 m³, depending on installation conditions, building insulation, chimney draft, fuel quality, and operating method.

What material is used for the firebox?

Agnet uses cast iron / SCh20 cast iron construction with vermiculite lining inside the combustion chamber.

What makes Agnet different from common fireplace inserts?

Agnet uses a vertical firebox design, which creates a taller flame view. This format is less common in cast iron fireplace inserts.

Does Agnet have a glass airwash system?

Yes. Agnet is designed with a glass airwash system to help reduce soot buildup on the viewing glass during proper operation.

Does Agnet have secondary combustion?

Yes. Agnet includes a secondary combustion air system with air supply through the rear channel and upper firebox openings.

What chimney diameter does Agnet use?

Agnet uses a 150 mm chimney connection.

Can the flue outlet direction be adjusted?

Yes. The flue outlet can be configured depending on installation layout. The review text describes a cast iron 45-degree outlet structure that can be rotated for vertical or horizontal connection.

Is Agnet suitable for stone cladding?

Yes. Agnet is suitable for stone or brick fireplace surround projects. When using stone cladding, the surround thickness and front projection should be checked before installation.

Is Agnet suitable for OEM projects?

Yes. Agnet is suitable for fireplace insert importers, distributors, private-label buyers, and OEM cast iron fireplace insert programs.


Conclusion

Agnet is a distinctive vertical cast iron fireplace insert designed for built-in fireplace projects.

Its 12kW heating capacity, vertical flame view, SCh20 cast iron body, massive cast iron door frame, vermiculite-lined firebox, secondary combustion, clean glass airwash, 150 mm chimney connection, and stone cladding compatibility make it suitable for residential heating, fireplace renovation, fireplace retail distribution, and OEM fireplace insert programs.

For distributors, Agnet is easy to position because the product story is clear: a vertical cast iron insert with strong visual impact, classic design, practical combustion control, and excellent compatibility with stone or brick fireplace surrounds.

See full specifications and current availability on the Agnet Cast Iron Fireplace Insert product page, or explore more models in Fireway’s cast iron fireplace insert range.

Picture of Alex Wang

Alex Wang

Hi, I’m Alex Wang, founder of firewayhot.com. I have been working with cast iron wood stoves, fireplace inserts, sauna stoves, and cast iron components for more than 8 years. Fireway is operated by Tianjin Bohaibay Trading Co., Ltd., focusing on cast iron heating products and OEM cast iron parts for importers, distributors, fireplace stores, and heating equipment brands. This website shares practical product knowledge, manufacturing experience, and sourcing guidance from a Chinese cast iron stove supplier’s perspective.
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