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Studio Nisho Kratos GFRC fire feature
Studio Nisho Kratos GFRC fire feature in Birch finish
Studio Nisho Kratos GFRC fire feature in Smoke finish
Studio Nisho Kratos GFRC fire feature in Carbon finish
Studio Nisho Kratos GFRC fire feature in Onyx finish
Studio Nisho Kratos GFRC fire feature – alternate product view 6
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature
Studio Nisho Kratos GFRC fire feature in Birch finish
Studio Nisho Kratos GFRC fire feature in Smoke finish
Studio Nisho Kratos GFRC fire feature in Carbon finish
Studio Nisho Kratos GFRC fire feature in Onyx finish
Studio Nisho Kratos GFRC fire feature – alternate product view 6
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting
Studio Nisho Kratos GFRC fire feature installed in an outdoor setting

Round GFRC Concrete Natural Gas or Propane Fire Bowl 36-Inch, 42-Inch and 48-Inch - Studio Nisho Kratos

SKU: KRA36NGB
Made to OrderFINAL SALE

Estimated delivery 6-8 weeks from order date.

Freight curbside delivery · Appointment required · Liftgate included. See how freight delivery works.

Sale price $8,800.00
FREE SHIPPING
Size: 36"
Color: Birch
Your Configuration 36" · Birch

Questions about this product?

Call a product specialist: 833-777-2962

Design & Construction
Up to 190,000 BTU Crossfire Burner
36-, 42- or 48-Inch Diameter
Hand-Cast GFRC Construction
Studio Nisho Kratos round GFRC concrete fire bowl
Studio Nisho Kratos

A Modern Cauldron Built for the Full Circle

Kratos combines a strong straight-walled bowl with a low 14-inch stance. Three diameters let the fire feature scale from an intimate courtyard to a generous entertaining space.

  • Up to 190,000 BTU: Warming Trends Crossfire brass burner
  • Three diameters: 36, 42, or 48 inches, all 14 inches high
  • Hand-cast GFRC: cauldron-inspired form with individual finish character
  • Natural gas configuration: online variants are natural gas; contact us to confirm a liquid propane build
Studio Nisho Kratos fire feature in an outdoor setting
Designed for Gathering

Round Geometry Makes Gathering Simple

A circular vessel gives every chair a direct view of the flame and avoids a front, back, or end seat. That makes Kratos easy to arrange within conversational outdoor rooms.

Its curved silhouette also breaks up the straight geometry of pavers, walls, and furniture, adding a deliberate sculptural counterpoint to the landscape.

  • Made to order: approximately 6–8 weeks before transit
  • Final sale: verify size, finish, fuel, access, and installation requirements before ordering
  • Curbside freight: plan the path and help needed for final placement
Choose the Right Scale

Kratos Dimensions

Map the complete vessel footprint together with seating depth, circulation, published burner clearances, gas routing, and delivery access before ordering.

36”36” L × 36” W × 14” H

Compact Circle

A focused scale for courtyards and smaller seating arrangements.

42”42” L × 42” W × 14” H

Versatile Middle

A balanced footprint for many residential patios and conversational groups.

48”48” L × 48” W × 14” H

Entertaining Scale

A stronger centerpiece for large patios and wider seating circles.

Planning note: Product dimensions describe the vessel only. Your completed layout also needs safe burner clearances, room for furniture and circulation, a suitable base, gas access, and a clear delivery route.
Detail view of the Studio Nisho Kratos concrete fire feature
Built for Outdoor Projects

A Continuous Curve, Cast by Hand

Studio Nisho casts each Kratos vessel from glass fiber reinforced concrete in Denver, Colorado. The material supports a clean continuous curve while keeping the vessel lighter than conventional solid concrete.

The Warming Trends Crossfire brass burner is sized to the selected vessel and controlled by the included key valve after a qualified professional completes the installation.

Cauldron Profile

A grounded round form designed to be viewed from every side.

Brass Burner

Crossfire system with manufacturer-rated output up to 190,000 BTU.

Complete Package

Burner, plate, valve, flex hose, lava rock, cover, and leveling feet are included.

Concrete Finishes

Four Tones for the Surrounding Architecture

Finish samples and screens can display color differently. Natural variation in hand-finished concrete is expected.

Birch

A warm light neutral for pale stone, limestone, and natural wood palettes.

Smoke

A balanced mid-grey suited to contemporary hardscapes.

Carbon

A deeper charcoal that adds visual weight and contrast around the flame.

Onyx

A near-black option for high-contrast modern installations.

Finish disclosure: Color, movement, texture, and small surface characteristics will vary from online images and physical samples. Small hairline lines may form during curing as moisture leaves the concrete; the manufacturer states these should not affect long-term stability and are not considered manufacturing damage.
Dimensions & Specifications

Kratos at a Glance

Specification Details
Available sizes 36", 42", or 48" diameter
36-inch dimensions 36" L × 36" W × 14" H
42-inch dimensions 42" L × 42" W × 14" H
48-inch dimensions 48" L × 48" W × 14" H
Shape Round cauldron profile
Vessel material Hand-cast glass fiber reinforced concrete (GFRC)
Burner Warming Trends Crossfire brass burner
Maximum rated output Up to 190,000 BTU, depending on configuration; actual performance depends on fuel supply, pressure, installation, elevation, adjustment, and weather
Fuel Online variants are configured for natural gas; contact Smokeforges to confirm liquid propane availability
Gas connection 1/2" pipe opening
Finish options Birch, Smoke, Carbon, and Onyx
Manufacturer-listed weight Approximately 200–400 lb., depending on configuration
Production estimate Made to order; approximately 6–8 weeks before transit
Origin Handcrafted in Denver, Colorado
Included With Kratos

A Complete Fire Feature Package

  • Kratos GFRC vessel in the selected size and finish
  • Warming Trends Crossfire brass burner matched to the size
  • Key valve and manufacturer-supplied flex hose
  • Aluminum burner plate
  • Premium black rolled lava rock
  • Black marine-grade protective cover
  • Manufacturer-supplied leveling feet
Plan Before Ordering

Fit, Gas & Freight

  • Choose the diameter by mapping the complete seating circle, not the vessel alone.
  • Preserve circulation and all published burner clearances around the installation.
  • Use a stable, level, non-combustible surface capable of supporting the completed installation.
  • Have a qualified gas professional verify supply capacity and make the final connection.
  • Plan labor and equipment for curbside LTL delivery and final placement.
Made to order · final sale: The standard production estimate is approximately 6–8 weeks before transit and may vary with configuration, workload, and carrier scheduling. Verify dimensions, finish, fuel type, delivery access, and installation requirements before purchase.
Project Resources

Review the Installation Details First

Share the current manufacturer documents with your designer, contractor, and gas professional before the project is finalized.

Common Questions

Kratos Buying Guide

Which Kratos size should I choose?
The 36-inch model fits compact seating circles, the 42-inch size offers a balanced middle scale, and the 48-inch model creates a stronger centerpiece for a larger outdoor room. Tape out the vessel and furniture before choosing.
How does Kratos differ from Hestia?
Kratos has a straighter, cauldron-inspired wall and is offered in 36-, 42-, and 48-inch diameters. Hestia tapers toward its base for a softer bowl profile.
Can Kratos be ordered for propane?
The variants currently selectable on this page are configured for natural gas. Contact Smokeforges before ordering so a current liquid propane configuration, price, and production estimate can be confirmed.
What clearances should be planned?
The published burner diagram calls for 120 inches of vertical clearance and 36 inches of horizontal clearance from the burner to combustible materials, plus opposing-side ventilation. A qualified installer should verify the installation.
What warranty applies?
Studio Nisho currently lists a one-year manufacturer warranty against manufacturing defects on the vessel and a lifetime manufacturer warranty on the brass burner, subject to the manufacturer's current written terms.
Complete Your Order

Build the Seating Circle Around Kratos

Select your size and finish above. Because Kratos is made to order and final sale, review the dimensions, fuel configuration, access path, and installation requirements before continuing.

Buy Now — Go to CheckoutThe currently selected Kratos variant will be added before checkout.

Need help first? Call 833-777-2962 or email info@smokeforges.com.

[sf-highlights] flame :: Up to 190,000 BTU Crossfire Burner ruler :: 36-, 42- or 48-Inch Diameter shield :: Hand-Cast GFRC Construction [/sf-highlights]