Search  for anything...
Masterbuilt

Masterbuilt® 40-inch ThermoTemp Propane Gas Vertical BBQ Smoker with Analog Temperature Control and 960 Cooking Square Inches in Black, Model MB20051316

Based on 1,056 reviews
Condition: New
Checking for the best price...
$339.99
Save $60.00 was $399.99

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Oct 29
Order within 5 hours and 27 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

Recently Viewed

At a glance

Condition
New
Style
40" Propane
Model
MB20051316
Dimensions
22.8"D x 28.7"W x 53"H
Weight
92 lb
Color
Black
Power Source
Gas powered
In the box
User Manual
Warranty
1 Year Limited

Features 10

  • Vertical propane smoker with 960 square inches of cooking space
  • Ignition button to easily light fuel with the push of a button
  • Adjustable temperature dial to set your desired smoking temperature up to 375F
  • Four chrome-coated smoking racks

Description

Unlock flavor in every tender bite with Masterbuilt’s 40-inch ThermoTemp™ Propane Smoker. This vertical propane smoker makes creating deliciously-smoked foods simple and easy. Load your propane fuel into the hose, set your desired smoking temperature on the dial, and press the ignition button to light your flame. With Masterbuilt’s ThermoTemp technology, ensure your smoking temperature is maintained evenly throughout your cook leaving you with smoked meats that are rich in flavor and tender in texture. With four chrome-coated smoking racks and 960 square inches of ample cooking space, cook for the family with ease. From holiday hams to summertime smoked salmon, unlock flavor in every season with Masterbuilt’s 40-inch ThermoTemp Smoker.

Specs 19

Brand Masterbuilt
Model Name Propane Smoker
Power Source Gas powered
Color Black
Outer Material Alloy Steel
Item Weight 92 pounds
Product Dimensions 22.8"D x 28.7"W x 53"H
Fuel Type Gas

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 29

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

A Great First Smoker – Happy BUT READ CAREFULLY - Updated!
Style: 40" Propane
Review Image by Anomalous Phenomenon
Amazon robots call this model the MB20051316 with thermostat control – 40 inch, Black. The box is labeled somewhat more appropriately, “Masterbuilt 340G XL.” It doesn’t matter what you call it, as long as it works. This was my very first smoker and my out of box experience has been excellent so far - but - because of some reviews, I almost didn’t buy it. THE GOOD: Many reviewers complained about build quality, damaged or missing parts and trouble with the burner assembly lighting and staying lit. Even more complained about getting customer support from Masterbuilt. I didn’t experience any of this. I didn’t need to contact Masterbuilt, in part, because I did a lot of research before making this purchase. ASSEMBLY: I’m not the most “handy” guy but, I found the instructions (and a Masterbuilt Youtube video) to be sufficient during the build. I won’t say it was easy but it wasn’t bad. I took my time, and that methodical approach meant I had no issues during the assembly process. I probably spent 4 hours on the build. I was completely alone and had no trouble standing it upright once the bulk of the construction was complete. I built, bubble tested all gas connections and seasoned the unit all in one single day. Not a bad out-of-box experience! Usually, my wife has to come out of the house to remind me not to swear at least 45 times during a project like this - but for some reason, there was no swearing! My wife was more than a little suspicious. A few neighbors stopped by to ogle the debris field in my driveway from all the packaging and of course, they invited themselves over for brisket or pulled pork once they realized what I was building, indicating my next purchase may have to be a fence… with some razor wire on the top. MODIFICATIONS: I purchased Lavarock sealing tape to enhance the door seal and a separate dead-simple interior oven thermometer as a simple way to double check temperatures. Don’t freak out over temperature variations. There have to be dozens of ways to monitor your smoker temp as well as your meat. Expecting this smoker to automate that effectively is unrealistic. It may be a “smoker” but YOU are the pit boss. Don’t get mad at the machine if you get lazy with your cook. During our first smoke, (a whole chicken and an 8lb pork shoulder) our old iGrill meat thermometer proved to be about as useless as the day we bought it. It did provide feedback but it kept dropping the signal. We wished we had something “better” for our next smoke (More on that in minute.) YES IT HOLDS TEMPS: During our first smoke, we saw temps rise and fall constantly. Because of this, I was out there fooling around with the controls constantly. All I managed to do, was keep things in constant turmoil. During our second smoke, I let the thermostat do its job. That worked much better. The thermostatic control built into this smoker works very well. You can set a temperature and verify that with any thermometer – once you’ve achieved the desired range, it will keep and hold that range very well. Huge variations will occur when you open the main door and smaller variations may occur when you change chips or add water to the pan. Let the unit adjust itself to your desired range before you try adjust the burner. Water is the key to holding temps. Fill the pan ¾ full and check it every hour or so. The water helps regulate temps while providing moisture. Surprisingly, this does not use that much propane. The little gage isn’t all that helpful but it’s better than nothing. THE BAD: It’s not really bad. If you’re used to smoking with an offset grill, electric smoker or your regular old gas grill – there may be a learning curve. Every smoker has its quirks. Keep that in mind when you read other reviews. For me, the two worst things to complain about are: The hose for the propane tank isn’t long enough to allow the tank to be mounted on the smoker during use. [Turns out I was wrong about this. There is enough hose to fit. ] Also, the metal edge on the inside the door where the glass is fitted needs to be filed down. It’s got razor sharp burrs or jagged edges that will chew up your sponge, hand or cloth during cleaning. This in no way affects function so it’s minor. I’ll hit it up with a Dremel tool next cleaning. [ I did this very carefully and it helped a lot!] THE UGLY: Cleaning. You’ll need to be ready to do a lot of this. The idea of putting glass in the door seemed attractive to me. I hadn’t had a smoker before. Five minutes in and I’m partially blind to what’s happening inside. 4 hours in and I might as well have no glass at all. Don’t get me wrong – the glass is convenient but it’s mostly for luring in new smoker buyers. The pros know this is a gimmick. It still looks impressive, and I am in no way dissatisfied. Just plan to clean this thing more than you think. CONCLUSION: My second smoke is well underway and I’m loving this unit. My neighbors are eyeballing me with hunger in their eyes. I’m not sure how long I can keep them at bay with just a pitchfork. If you’ve gotten this far – send reinforcements! Please! UPDATE & MODIFICATIONS After the 2nd smoke (11+ hours ) I have some observations. The temp control works within reason. I do not expect this to hold at any precise temperature. However, it held temps within 5-10 degrees throughout the day. It did adjust itself after opening doors but the temps would spike as high as 330 - 350 before returning to 275. This is normal. After another successful smoke, I cleaned the unit and noticed some small modifications can be made to extend the life of the smoker. Please note: I am not responsible for any modifications YOU MAKE based on these suggestions. 1.) Trapped water was discovered in both the upper (main) and lower door after cleaning. To prevent this, I drilled a 5/16ths hole into the right-hand bottom (underside) of the lower door. (When the door is installed, and you are facing the unit. The hole will be located on the underside near the far-right corner.) This will release any trapped water after cleaning. This hole should allow water to escape without any sacrifice to functionality. I filed the edges of the hole(s) with a Dremel tool to help protect the powder coat. 2.) I repeated these steps on the main door. When facing the smoker with the door closed, a 5/16ths hole in the right-hand bottom (underside) of the main door will allow any trapped water to escape after cleaning. 3.) Water Tray Rack: After inspecting this rather difficult to remove tray, I could see the sides were slightly bowed outward. A quick tap in the middle of each outside bar (with a hammer) made the tray slide in and out of the smoker MUCH EASIER. Use caution when removing, filling, and replacing this tray, especially during use. About ¾ full should do it. 4.) You may not need to do this - but my unit had a very rough inside edge around the glass in the door. I was able to use a Dremel tool to carefully file down all the burrs and edges so that all edges are now smooth – and no long snag a sponge or cloth. 5.) After a thorough cleaning, I left the unit sitting in full sun with the doors open to allow the unit to dry completely. Because I installed Lavarock sealing tape around the doors, extra precautions were taken. This tape absorbs and holds some water. I wanted the tape to be completely dry before closing the doors and putting the smoker away in my garage. 6. I prefer wood chunks to wood chips for long lasting smoke. ... show more
Reviewed in the United States on July 22, 2021 by Anomalous Phenomenon
Masterbuilt® 40-inch ThermoTemp Propane Smoker
Style: 40" Propane
I had a very old Masterbuilt 40" propane smoker that I purchased sometime around 2000-2002. Served me very well, had to replace the burner, regulator and front control panel once. After close to 25 years, the bottom rusted out even after my attempts to salvage it. Was debating between the newer 1150 gravity feed & the 40" XL propane. Went with the 40"XL. At my age, I can buy & smoke a lot of meat for the difference in cost, not saying the 1150 isn't worth the money, I just couldn't justify the cost in my upper years!! Very happy with the 40"XL. Capacity is just slightly less than my old Masterbuilt propane smoker. But this new one does hold a lot of meat product! Maintains temps very well with the new ThermoTemp system. During the burn off cycle, I actually ran the smoker for almost 3-hours & it didn't deviate from the 350degF setting at all (I had an oven thermometer sitting on one of the racks). Sunday morning at 5am on Memorial Day Weekend, I fired it up for it's first smoke. I smoked (4) pork shoulders, (2) racks of baby backs and a tray of stuffed shotgun shells all at one time. Temp was set at 250degF, and it easily maintained that temp through the entire 12-hour smoke. After the shoulders were off, I then smoked (2) full slabs of Salmon at 275degF, and again it was rock steady even with a light rain and wind kicking around. I do substitute a large cast iron pan for the small smoke pan that comes with the unit. I always use wood chunks, not chips, and I augment the chunks with a little bit of lump hardwood charcoal in that same cast iron pan. Helps keep the chunks smoldering & producing consistent smoke for the cook. Got the same great flavor with this new smoker as the old one. I'll need another couple smoking sessions to fully grasp the new concept of the ThermoTemp system, which worked flawlessly. I'm just used to monitoring the smoker temp as a hands-om thing. I do miss the in-door thermometer I had on my old smoker. The only draw back for this new 40"XL is the door with the glass window. It looks nice in the pretty pictures & videos, but in reality, after about half the smoke session, you're never going to see a whole lot through that glass panel again. The smoke residue & fat drippings take their toll. Glass on a smoker is for amateurs, it has no real function for the serious backyard smoker. Masterbuilt -- would you please consider making a replacement door for the 40"XL that's just a good ol' solid door, no glass? I'd be one of the first inline to order one!! I'm going to try some 30% Cleaning Vinegar to see if I can get the residue off the glass, not that it matters for smoking, but just for cleaning purposes. Soap & water didn't cut it. Hopefully there's a solid door coming out from Masterbuilt for these units!! Overall, I highly recommend this 40"XL propane smoker from Masterbuilt. They do make quality products. ... show more
Reviewed in the United States on May 25, 2026 by 44Mag
Totally Unreliable
Style: 40" Propane
I have to say that this is the worst outdoor cooker that I ever owned. The problem from the very beginning was getting it to light; as soon as I let go of the knob, the flame would go out. Also, the regulator would frost up after a few minutes. Masterbuilt sent me a new control panel and regulator. Now, the smoker would light, but it would take a back-breaking 3-5 minutes of holding in the knob. Masterbuilt sent me a new flame sensor. Now, the same issue of starting exists, but the slightest puff of breeze blows out the flame. It's been 3 months and I have had a few successful cooks on dead calm days. Today, like an idiot, I put on a pork shoulder. Aching back and all, I got the smoker lit. Unfortunately, the wind picked up to a blustery 5 mph after 2 hours. I'm finishing my cook in the oven. Tomorrow, I'm going to haul the piece of junk to the curb with a sign: Free. As Is. And yes, the replacement flame sensor is wrench tight. As was the one I replaced. I'm now shopping for a gravity-fed charcoal smoker. Needless to say, I won't be buying a Masterbuilt. ... show more
Reviewed in the United States on September 15, 2026 by Dave Orzechowicz
Perfect Fit and Finish! Read the Update, too!
Style: 40" Propane
Review Image by Edward A. Milliron
No pictures yet, it's February and I just put it together. I was totally blown away by the quality and finish! Start with the unboxing, a ton of packing material to help keep it from damage. I HAD NO DAMAGE! Not a scratch! Fitment? Perfect! Everything lined up perfectly! Minor jiggling when all the leg screws were being tightened, but that's why you wait until all those parts are assembled to tighten the screws. The nuts are a 10mm variety so I used my small 10mm box wrench instead of the adjustable they suggest. All told it took about two and a half hours for the assembly, and I used the You Tube video as a guide for the visuals. Everything went perfect. I need a few weeks of warmer weather to melt the foot of snow off the deck so I can test drive this monster, it is big and spacious! I'll update the review after seasoning and a first smoke. If this Pro Grade Smoker cooks as good as it fit together and looks, there wont be enough stars to write it up.... UPDATE: 03/16/2026 First seasoning and First Cook. When seasoning the smoker I started at setting the dial temp at 175, and after the smoker sat there for fifteen minutes the internal temp was at 185. Moving up to 225, after 15 minutes it sat at 235. When set to 250, it landed at 260 after 15 minutes of wait time. At 275 setting, it bounced between 274 and 280 after 15 minutes. Keep that temp set in mind for the first cook. At 300 it settled in at 305 after the 15 minute wait time. The final setting of 325 settled to 335 after waiting for 15 minutes. Not too bed on the accuracy of the settings dial. The First Cook on Sunday scared the dickens out of me...! I went to light the unit, pressed in on the dial set to 175 and pressed the igniter and poof, FIRE! Just like it's supposed to be. about 15 seconds later it blew out. Twice more, same thing. But I was dealing with about a steady 25 mile an hour steady wind across the deck. The last time, after ignition I continued to hold the dial in for about 20 seconds. PERFECT! Even thought the wind continued through out the day, no more blow outs. You Can see the results in the photo. Perfect smoke ring, One clean bite off the bone and the flavor was fantastic. I cooked the potatoes, carrots and onions in a foil pan during the same time and they also came out fantastic! This Smoker is well worth the money! ... show more
Reviewed in the United States on February 17, 2026 by Edward A. Milliron
Great smoker
Style: 40" Propane
I bought this because I have had no luck with electric smokers lasting very long. I figure propane is likely to last longer, since there are no electronics to foul up with the rain / snow / heat, etc. My gas grill has outlasted about half a dozen smokers, and still going strong, so why not try a gas smoker? PROS Temperature control. For some reason most gas smokers don't let you set a specific temperature. That was a deal breaker for me. This smoker holds temperature within about a 5 degree range, which is excellent. I recommend using a thermometer to calibrate with though. While it did keep a consistent temperature, it was around 10 degrees off from the setting when I measured closest to the internal thermometer, and it varied top to bottom as well (this is all normal, but important to know so you can adjust accordingly). It also gets up to 350, where most electric smokers are much lower. This lets you crank up the temperature at the end to firm up the skin on chicken etc. Heats up / starts smoking quickly, and produces a lot of smoke. Electric smokers I've used in the past take forever. Size - The XL model easily holds a rack of ribs or a full brisket. With smaller cabinet-style smokers I've had to fold or cut the brisket, which is a no-no. Good sized chip tray. Bigger than it looks, and quite sufficient. CONS Minor build quality issues. On one of the racks, one of the tines(?) came free, and I cut myself on the jagged metal edge. The racks fit too snugly into the smoker, so it's a bit difficult to get in and out. The bottom door sags just a bit and scrapes the bottom frame of the smoker unless you lift up a little. Nothing major, but a little disappointing there Chip tray gets really hot. Ok, so it's supposed to get hot, but it basically sits right in the flame. When I went to remove it to add more chips, it melted 2 different pot holders. I'm debating the best way to deal with that because I normally change out chips 2-3 times during a longer smoke. OTHER: Packaging - Someone else mentioned that this was packed by a "tetris master". I have to agree. It was quite incredible the degree to which everything was nested and packed within itself. Strange, slightly annoying and impressive all at once. Assembly took some time, so just plan on a couple of hours of looking at a bunch of drawings with no words. It wasn't hard though, just a bit time consuming. Odd Size - This one's nitpicking, but it's really tall, and a bit wider than most smokers, so it's hard to find something to fit without being comically oversized. Overall I'm extremely happy with this smoker, and will not be switching back to electric any time soon. ... show more
Reviewed in the United States on December 22, 2019 by Linda Della Croce
Keeps perfect temperature
Style: 40" Propane
Keeps heat consistent made best boston butts
Reviewed in the United States on October 2, 2026 by june
It's Worth It!
Style: 40" Propane
Unpacking this smoker was interesting. A lot of thought went into getting all these parts into that one box! Even with all the carefully laid out packing and all the Styrofoam, some parts still got damaged, including some denting on the side. I was able to straighten most of it well enough so just some minor cosmetic damage shows. Assembly: Follow the directions! I rated this 3 stars because it some of the assembly is a real pia! Not a deal breaker - you are getting a LOT of smoker for the money! Take your time. Plan on spending a few hours putting this smoker together. I began by sorting all the hardware and there is a lot of it. I do a lot of mechanical work so every group of nuts, bolts, screws got its own magnetic tray and label. This helps a lot. No trays? Use cereal bowls or something. I installed all sheet metal type screws BY HAND (as in no screw gun, even though I own several), to avoid stripping them out. Even so, I chose to up-size the short ones (maybe #8 x 1/2") to a #10 size. Most parts lined up fairly well. In the short time I have had this smoker I've done ribs and one pork roast. All came out excellent. If you are new to smoking, seek guidance via the Internet, friends or a good book as this smoker comes with nothing. I was surprised by this, expecting to find at least a basic getting started type booklet. The Masterbuilt website has some good info. CLEAN THE WINDOW!! EVERY TIME!! I am NOT a fan of the window and one reason I held off buying this smoker when it first came out was I was hoping for a model without the window. It isn't needed. In fact, visibility drops when the smoke gets going and continues to degrade. After 3-4 hours you can't see much at all. Smokers don't need windows! I would absolutely buy this smoker again. It is priced well, probably because the customer does all the assembly work! It also works quite well. I have not needed to contact Masterbuilt for anything so far but I hear good things about them. Buy it - you will like it! ... show more
Reviewed in the United States on August 11, 2020 by lcar987
Great purchase for the money
Style: 40" Propane
Assembly not the easiest, but not too difficult, but definitely a two person job. So far so good on two smokes; however, the “chip tray” is way too close to the flame and not deep enough in my opinion. Take off the “lid” of the chip tray and use chunks of your favorite wood vs chips. Why? Chips caught on fire really quickly(even if you soak chips-although I don’t like soaking chips-I want more smoke). I’m thinking of getting a cast iron, 8” pan for the wood chunks but not sure if I can find the perfect fit. The size of the smoker is unbelievable. I did 10 Turkey Legs last weekend and it didn’t look like anything was in there. Small to medium size brisket, will be no problem. I do wish it had an electronic temp gauge on the outside, not just the dial you set your smoker too. I did find the temperature to be off a little. I think 265-275 is a little more than that. It says that in the booklet, so be aware. Clean glass after each smoke is another pointer btw. Overall I recommend this smoker to anyone deciding between electric or propane. Propane will hold heat or get to your desired temperature way better then electric from what I have seen. ... show more
Reviewed in the United States on September 15, 2021 by Bruce Dollar Miller
How it works
Checking for best price...