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FCMP Outdoor IM4000 Dual Chamber Tumbling Composter (Black)
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Material | Plastic |
Color | Black |
Brand | FCMP Outdoor |
Capacity | 37 Gallons |
Product Dimensions | 30"L x 28"W x 36"H |
Shape | Octagonal |
Item Weight | 26.5 Pounds |
About this item
- Make sure this fits by entering your model number.
- Tumbling composter – avoid digging and mixing your compost pile by hand. The tumbling design makes mixing easy and efficient. Just close the door and turn it 5-6 times every 2-3 days. In hot sunny conditions and with a proper balance of ingredients the compost can finish in as little as 2 weeks.
- Easy to use – fantastic for beginners! The large openings and removable door make it easy to add Scraps/clippings and remove finished compost. Deep Fins on the body provide great ergonomic handholds.
- Two composter chambers are better than one – two separate sides allow the first side to finish while leaving the second side Available to add fresh Scraps/clippings. Continuously swapping sides after finishing will create an uninterrupted flow of rich, healthy compost. Total capacity 37 gallons (5 cu Ft)
- Durable construction – BPA free, UV inhibited, 100% post-consumer recycled polypropylene is contact safe and will not degrade under direct sunlight. The galvanized steel frame is corrosion resistant.
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From the manufacturer

Made In North America
by FCMP Outdoor

Tumbling Design
Avoid digging and mixing your compost pile by hand. The tumbling design makes mixing easy and efficient. Just close the door and turn it 5-6 times every 2-3 days. In hot sunny conditions and with a proper balance of ingredients the compost can finish in as little as 2 weeks.
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Two Composting ChambersTwo separate sides allow the first side to finish cooking while leaving the second side available to add fresh scraps/clippings. Continuously swapping sides after finishing will create an uninterrupted flow of rich, healthy compost. |
Durable ConstructionThe composter body is constructed from polypropylene. It is contact safe and will not degrade under direct sunlight. The galvanized steel frame is corrosion resistant. |
Excellent AerationThe composter features adjustable air vents as well as deep fins to break up clumps inside the chamber and mix lots of oxygen into the compost. Tumbling composters allow far greater aeration than standard models. |
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![]() This item FCMP Outdoor IM4000 Dual Chamber Tumbling Composter (Black) | ![]() Large Dual Chamber Compost Tumbler – Easy-Turn, Fast-Working System – All-Season, Heavy-Duty, High Volume Composter with 2 Sliding Doors - (2 – 27.7gallon /105 Liter) | ![]() Garden Compost Bin from BPA Free Material, Dual Rotating Outdoor Composting Tumblers (43 Gallon,Black) | ![]() MaxWorks 80699 Compost Bin Tumbler for Garden and Outdoor, 42 Gallon Capacity with 2 Chambers Dual Rotating Composting Tumbler , Black | ![]() Maze 65 Gallon Dual Chamber Compost Tumbler and Maze Compost Cart | |
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Customer Rating | 4.5 out of 5 stars (16487) | 4.1 out of 5 stars (2085) | 4.5 out of 5 stars (2958) | 4.4 out of 5 stars (1055) | 4.4 out of 5 stars (113) |
Price | $91.99$91.99 | $134.90$134.90 | $89.99$89.99 | $84.99$84.99 | $293.83$293.83 |
Shipping | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details |
Sold By | Amazon.com | DF OMER | EJWOX USA | Amazon.com | Amazon.com |
Capacity | 37 gallons | 27.7 gallons | 43 gallons | 42 gallons | 12 gallons |
Color | Black | Black | Black | Black | Black |
Item Dimensions | 30 x 28 x 36 inches | 37.4 x 23.5 x 29.5 inches | 28.5 x 26 x 37 inches | 28.5 x 36.8 x 26 inches | 30 x 41.3 x 44.5 inches |
Size | 37 gallon | — | 43 Gallon | — | — |
Sunlight Exposure | full-sun | — | — | — | — |
Product Description
This unique tumbling composter features two chambers - fill one side, while the other side cures, making it easy to efficiently convert your kitchen and yard waste into rich soil enhancing compost. Just load it up, close the sliding door and use the convenient built- in hand holds to give it a turn every couple days and see how it produces finished compost in weeks.
Product information
Product Dimensions | 30 x 28 x 36 inches |
---|---|
Item Weight | 26.5 pounds |
Manufacturer | Forest City Models and Patterns |
ASIN | B009378AG2 |
Country of Origin | Canada |
Item model number | IM4000 |
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #1,879 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #1 in Outdoor Composting Tumblers |
Is Discontinued By Manufacturer | No |
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Customer reviews
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Reviewed in the United States on November 14, 2017
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Top reviews from the United States
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I think I’ll go back to a compost pile out back with a pitchfork.
It’s a good product, it’s just me.
Only possible complaints would be it gets pretty heavy and takes two people to move if you want to empty it directly into a garden bed, and also not the easiest to get sticky compost back out of the little sliding doors when it's time to empty it.
The 37 gallons size is too small for your compost to reach critical mass and self-generate enough heat.
Furthermore, even if the double compartment seems like a good idea at first, it divides the 37 gal by half, and you end up with 18.5 gal. The 37 gal size is barely enough for 2-3 mower bags.
Due to its size, I also find the doors to be also a bit small.
I have 2 compost piles, and one tumbler. The same mix (30% green / 70% browns) with home-brewed starter, reached ~150F./ 65C. in 24hrs in the compost pile. The tumbler remained at barely above outside temp.
It is now November in MA, and I have two blocks of semi-frozen far-far-away to be composted mix. I don't foresee anything happening before June now.
I will definitively remove the compartment separator next spring.
Assembly: As many times stated by other reviews, you'll need some yoga abilities, hence a second person to help is highly recommended. I strongly suggest to not tighten all the screws at first, but to just pinch them (including the legs) and once the assembly is complete (done on a flat surface), tighten them.
Screws: For once, a company is giving you few more screws, and that is highly appreciated. That being said, I would have highly appreciated to have Allen,Torque or Phillips heads instead of those ridiculous square-flat heads. The nuts are Flange Serrated locknuts, and that's a good thing.
I like the indentations that help mixing the compost, the vents and also the fact that is not fully waterproof: Some tumblers are, and if you have too much moisture, it cannot escape, collects on the bottom and you start brewing a stinky anaerobic wet mush.
Lastly, the secret to compost [fast and well] is to have the proper ratio of green/brown, to have the correct amount of moisture and to have enough oxygen for the bacteria to thrive, so don't hesitate to mix very well and rotate frequently.
To boost the starting process, add some old compost. I, me and myself, add 1/2 cup of Milorganite* type fertilizer.
So, to sum up:
Pro: Well designed
Con: Too small
I would buy again if they increase the size to at least 60 to 80 gal.
For those interested in 'pro'per composting:
- I have attached a list of Carbon to Nitrogen ratio for different materials. (Source Clemson University)
Adding worms to your compost: Yes but no! Only do it when your compost does not heat anymore. Once it has started to cure, it's OK to add worms, i.e. Red Wrigglers. If you do it too early you will either kill them or make them move elsewhere. I don't recommend adding them directly in the Yimby as it will get too hot when left in direct sunlight. Red Wrigglers do well at 75F. and do not like below 55 or above 90.
- Home brewed compost accelerator:
5 gal warm water (105F-110F.) Do not go over 120F.
1/4 to 1/2 cup of molasses or brown sugar. Last choice is white sugar.
1/2 cup unscented household ammonia (Extra nitrogen)
2 teaspoon active dry yeast.
Mix gently, let brew for about 2hrs, mixing from time to time.
The same recipe exist with beer and soda, beer is for the yeast, soda is for the sugar.
You can apply the mix with an Ortho Sprayer set at 8oz per gallon.
Spray that at the beginning of your compost pile and spray again once the compost is advanced. The first heat spike will kill the yeast.
If you really want to go the extra mile, add a pantyhose filled with 4 cup of compost or good soil and aerate the mix with a small fish tank air pump.
And finally, for the nut job, there is the Harvard University bacterial / fungal compost tea. Normally to use on trees or lawn, but it boosts the curing and helps break down the though bit faster. Please Google green.harvard.edu + make your own compost tea
It requires Fish Hydrolysate and Kelp, all available on Amzn
The above recipe has been featured in the TV show Ask This Old House, S8E9
Sources:
Clemson University
Harvard University green.harvard.edu

Reviewed in the United States 🇺🇸 on November 14, 2017
The 37 gallons size is too small for your compost to reach critical mass and self-generate enough heat.
Furthermore, even if the double compartment seems like a good idea at first, it divides the 37 gal by half, and you end up with 18.5 gal. The 37 gal size is barely enough for 2-3 mower bags.
Due to its size, I also find the doors to be also a bit small.
I have 2 compost piles, and one tumbler. The same mix (30% green / 70% browns) with home-brewed starter, reached ~150F./ 65C. in 24hrs in the compost pile. The tumbler remained at barely above outside temp.
It is now November in MA, and I have two blocks of semi-frozen far-far-away to be composted mix. I don't foresee anything happening before June now.
I will definitively remove the compartment separator next spring.
Assembly: As many times stated by other reviews, you'll need some yoga abilities, hence a second person to help is highly recommended. I strongly suggest to not tighten all the screws at first, but to just pinch them (including the legs) and once the assembly is complete (done on a flat surface), tighten them.
Screws: For once, a company is giving you few more screws, and that is highly appreciated. That being said, I would have highly appreciated to have Allen,Torque or Phillips heads instead of those ridiculous square-flat heads. The nuts are Flange Serrated locknuts, and that's a good thing.
I like the indentations that help mixing the compost, the vents and also the fact that is not fully waterproof: Some tumblers are, and if you have too much moisture, it cannot escape, collects on the bottom and you start brewing a stinky anaerobic wet mush.
Lastly, the secret to compost [fast and well] is to have the proper ratio of green/brown, to have the correct amount of moisture and to have enough oxygen for the bacteria to thrive, so don't hesitate to mix very well and rotate frequently.
To boost the starting process, add some old compost. I, me and myself, add 1/2 cup of Milorganite* type fertilizer.
So, to sum up:
Pro: Well designed
Con: Too small
I would buy again if they increase the size to at least 60 to 80 gal.
For those interested in 'pro'per composting:
- I have attached a list of Carbon to Nitrogen ratio for different materials. (Source Clemson University)
Adding worms to your compost: Yes but no! Only do it when your compost does not heat anymore. Once it has started to cure, it's OK to add worms, i.e. Red Wrigglers. If you do it too early you will either kill them or make them move elsewhere. I don't recommend adding them directly in the Yimby as it will get too hot when left in direct sunlight. Red Wrigglers do well at 75F. and do not like below 55 or above 90.
- Home brewed compost accelerator:
5 gal warm water (105F-110F.) Do not go over 120F.
1/4 to 1/2 cup of molasses or brown sugar. Last choice is white sugar.
1/2 cup unscented household ammonia (Extra nitrogen)
2 teaspoon active dry yeast.
Mix gently, let brew for about 2hrs, mixing from time to time.
The same recipe exist with beer and soda, beer is for the yeast, soda is for the sugar.
You can apply the mix with an Ortho Sprayer set at 8oz per gallon.
Spray that at the beginning of your compost pile and spray again once the compost is advanced. The first heat spike will kill the yeast.
If you really want to go the extra mile, add a pantyhose filled with 4 cup of compost or good soil and aerate the mix with a small fish tank air pump.
And finally, for the nut job, there is the Harvard University bacterial / fungal compost tea. Normally to use on trees or lawn, but it boosts the curing and helps break down the though bit faster. Please Google green.harvard.edu + make your own compost tea
It requires Fish Hydrolysate and Kelp, all available on Amzn
The above recipe has been featured in the TV show Ask This Old House, S8E9
Sources:
Clemson University
Harvard University green.harvard.edu




Top reviews from other countries

Pros:
☺ Rotates for easy tossing of compost
☺ Good size with 2 chambers
☺ Solid frame and plastic, feels like it will last.
Cons:
☹ Tedious and daunting assembly with an abundant amount of screws. However, ultimately ensures quality a lasting build quality, so this is a minor con.
Overall: Well built composter, which should last a good long time in the elements. Recommended.
I enjoy helping consumers make informed decisions. Thank you very much for the 'Yes' helpful vote, and please feel free to comment or ask questions related to this product or other items I have reviewed on Amazon.




Reviewed in the United Kingdom 🇬🇧 on January 22, 2019




