Corsair with Raised Flue Pan Set - Standard Configuration
360 Corsair with Raised Flue Pan Set - Standard Configuration Standard Grates in a Corsair Arch RaisedFluePanSet-Firebox Float Box with Sight Glass Looking inside the Raised Flue Pan video video video

2′ x 4′ Corsair Evaporator with Raised Flue Pan Set

(3 customer reviews)


NOTICE: Due to extreme popularity/demand, ALL Corsair models are experiencing extending lead times at this time. Mid-summer orders are on track for late fall or early winter delivery. The best/quickest way to get your order in the system is to place the order here online. Thank you for your patience. We guarantee this product is worth the wait!

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*Please contact us for international shipping quotes.

Discounts for Local PickupDISCOUNTS AVAILABLE for local pick up.
See our discounts list or contact us for details.

This evaporator is rated for 75 – 350 taps.
Estimated evaporation rate is 25 – 55+ gallons per hour.

Raised Flue Pan Set with Standard Configuration

This pan set follows our Standard Draw-Off Configuration as illustrated above. (The Same Side Reverse System configuration is available on larger pan sets.)

NOTE: Feature photo includes additional, optional components. (Sight glasses, Fitted Hood, Forced Draft System, Auto Draw-Off with Valve Assembly)



  • [A] Firebox Peep Window
  • [B] Large, Airtight, Steel Door and Large Combustion Chamber  (It’s true air-tightness and large combustion chamber make this a high efficiency arch of unprecedented versatility.)
  • [C] Fully Steel Framed
  • [D] Factory Optimized Geometry for ANY Style of Smoky Lake Pan (And, very easily convertible if you change pan styles in the future.)
  • [E] Both Natural Draft and Forced Draft available
    • Natural Draft option includes an perforated attachment hub so that a Forced Air Kit could be easily added in the future.
    • Forced Draft option comes with a pre-mounted Blower and Domed Cast Iron Grates
  • [F] Base Stack and Stack Pipe The arch is designed with a rectangular hub so that heat is drawn across the full width of your pan. The height of the included Base Stack and Stack Pipe combined will be 2x the length of your pan(s), up to 12 feet total height.
  • [G] Leveling Bolts (So the evaporator can sit flat even if your floor is uneven)


Cross Flow Syrup Pan

  • Sanitary Draw-Off Valve (1-1/2″) w/Food-Grade Gaskets
  • Positive Draw-Off Boxes in the Optimal Location
    (Finished syrup is drawn off at the rear of the Syrup Pan because that is where the heat is most concentrated.)
  • Angled Thermometer Port w/ 3″ Dial Maple Thermometer
  • Structurally Formed-in Dividers 
  • Reversible (To Lift Niter From the Pan Floor)
  • 13″ wall height

High Efficiency Flue Pan

  • Eleven 7″ Flues (On the 2′ wide pans) for Supreme Efficiency
  • 20″ wall height to contain the violent boil
  • Three 1/4″ Stainless Steel Plugs (To Plug Unused Ports)

Additional Features/Benefits

  • Inlet Float Box w/Fittings, Drain, and Connection for Optional Sight Glass
  • Transfer Float Box w/Fittings, Drain, and Connection for Optional Sight Glass
  • TWO Stiffened Gaskets
  • 22 ga. Mirror Finish Stainless Steel
  • Lifetime Limited Warranty on all TIG Welds
  • Filed, Hemmed Edges with 360º Handles on Both Pans


SKU: SL-CRSRF2448 Category:


Instruction Guides

Raised Flue Pan Sets

Four Reasons the Door Design is Critical

1Competitor doors/fireboxes are often much too small. In contrast, the 16″ x 16″ Corsair doorway makes it easier to load wood, and generate more heat.

2If you ever want to upgrade to Forced Draft — either now or in the future — you need an airtight door. With Corsair, you’re all set.

Regardless whether you have Forced Draft or Natural Draft, an airtight door increases efficiency. A leaky door works against you by allowing cold air to enter the firebox and cool your pans.

4Our competitors’ cast iron door fronts have been cracking since the 1800s. The Smoky Lake Corsair door will not. We guarantee it.

Compare the Durability


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Additional information

Type of Pan

Number of Taps

50 –100 Taps, 100 – 200 Taps, 200 – 300 Taps

Pan Size

2' x 4'

3 reviews for 2′ x 4′ Corsair Evaporator with Raised Flue Pan Set

  1. Patrick Diamond

    This is my first year using my new 2 x 4 high output pan set. Let me tell you this thing rocks. You will need a good wood supply as it likes it , a lot. It takes minutes to get up to a full boil once you get the fire started and turn on the AUF blower. I do not have an RO system and am feeding the head tank from my large tank outside the shack. If you want to up your game and have potential for more taps, but cannot handle the volume with your current small evaporator then check this one out. It is not that much bigger than a 2 x 3 evaporator or a barrel evaporator, but the difference is night and day. It makes really good syrup and once you begin using it you’ll wonder why you didn’t get one sooner.

  2. Jim Swanchak

    Wanted to send you an email letting you know that I’m totally amazed with the 2×4 raised flue pan set and Corsair evaporator. I timed the boil rate of your system. Used a digital flowmeter to calculate amount of sap boiled in 1 hour. Set a timer for 1 hour. Went through 73 gallons of sap in 1 hour. Stack temp app 1100 degrees. Did it a second time, 71 gal of sap. To put it bluntly…..I’m amazed, never in a million years did I expect that. Another plus is there was absolutely zero smoke, sparks, ash or smoke smell….I was worried about that. Had several cars & neighbors stop thinking the house was on fire, even the local cops stopped by when they saw all the steam, had to tell everyone it’s only steam.

    I invited several local syrup producers to see your system’s first firing and to help in case I needed help, one is a local Leader dealer, initially he was a major skeptic. Everyone was amazed, not one single negative comment other than the Guardian display wash-out in the daylight, I’m sure it would be acceptable if used inside.

    I can only imagine the boil rate when I install your preheater. That’l be for next season as it will require a change to my sap feed plumbing.

  3. Dale Peters

    My oh my, what an amazing evaporator!! The quality and craftsmanship is incredible. We purchased this when making the upgrade from small hobby to small business and have never looked back. From the floats to auto release value, could not be happier with the design and output. We are now a total Smoky Lake operation by complimenting our evaporator with a Smoky Lake finishing pan and stand alone Smoky Lake water jacket bottler. Great Wisconsin company that makes great equipment and stands by their work!!

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