The COSMO COS-RGS366SS is a 36-inch slide-in range with a 6.1 cu ft sealed-burner oven and stainless steel finish, priced at $2,299.99. It has just one review on record at 5 stars, which is encouraging but statistically thin for a purchase at this price.
Buyers who want a wide 36-inch slide-in range with six sealed burners and a flush kitchen fit. The combination of slide-in installation and a large oven suits households that cook regularly and want a streamlined countertop-to-range transition.
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Shoppers who need a deep review base before committing nearly $2,300 will find this range underserved at just one rating. Those who need 240-volt electric capacity should note this range operates on 120 volts, which suggests a gas configuration with an ignition circuit.
Capacity 6.1 cu ft
Heating Sealed
Burners / elements 6
Oven racks 2
Installation Slide-In
Width 35.86 in
Priced 53% above the category median ($1,499.00 across 135 tracked models)
Capacity of 6.1 cu ft - larger than 87% of the 135 models we track
Burners / elements of 6 - higher than 66% of the 135 models we track
Our scorecard
4.0/5overall
Owner rating5.0/5
5.0 average across 1 owner ratings
Value for money2.4/5
$377 per cubic foot, above the category median
Popularity2.5/5
1 owner reviews, more than most models here
Storage space4.5/5
6.1 cu ft, roomy for this category
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other kitchen ranges, cooktops, wall ovens, range hoods and microwaves we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The COS-RGS366SS measures 35.86 inches wide and installs as a slide-in, fitting flush between countertops and eliminating the gap common to freestanding ranges. The 6.1 cu ft oven uses sealed burner heating, which keeps cooking residue from falling into the burner box and makes cleanup easier than open-burner alternatives. Six surface burners across a 36-inch cooktop give meaningful simultaneous cooking coverage.
The 120-volt voltage listing is notable: standard full-size electric ranges require 240 volts, while gas ranges with electric ignition typically run on 120 volts. This spec suggests the COS-RGS366SS is likely a gas range with electric ignition, even though the fuel type is not explicitly confirmed in the data available. The sealed burner configuration supports this read.
At $2,299.99, COSMO is asking for a premium slide-in price with minimal buyer validation. The single 5-star review is positive but not statistically meaningful. Buyers should factor the lack of broad feedback into their decision and verify current review counts before purchasing.
Pros
Slide-in design gives a clean, built-in appearance without a built-in price
Sealed burner design makes surface cleanup more straightforward
Stainless steel finish suits most appliance suites
Cons
Only 1 buyer review, making quality assessment difficult
Fuel type not explicitly confirmed in available data
Nearly $2,300 is a significant ask with minimal buyer validation
Specifications
Capacity
6.1 cu ft
Heating
Sealed
Burners / elements
6
Oven racks
2
Installation
Slide-In
Width
35.86 in
Controls
Knob
Finish
Stainless Steel
Dimensions
27.76 X 35.86 X 37.83 In
Voltage
120 Volts
Performance notes
Six sealed burners across the 35.86-inch surface give room for large stock pots, multiple pans, and a simmering pot simultaneously. Sealed burners contain spills around the burner cap, simplifying cleanup after high-heat cooking. The 6.1 cu ft oven with 2 racks handles large roasting pans and allows two-rack baking. Knob controls provide direct, analog burner adjustment. The 120-volt electrical requirement aligns with a gas range ignition system, meaning the range likely connects to a natural gas or LP line for cooking heat.
What buyers say
This range has a single 5-star review, which is a positive signal but represents far too small a sample to draw reliable conclusions. No documented purchase volume is on record. Buyers considering this range should look for updated review counts and weight the price-to-validation ratio carefully.
Is the COSMO COS-RGS366SS a gas or electric range?
The available data does not explicitly confirm the fuel type, but the 120-volt electrical rating and sealed burner configuration suggest this is most likely a gas range with electric ignition. Full-size electric ranges require 240 volts, so the 120V spec points to a gas-primary cooking system. Verify fuel type with the retailer before purchasing.
What does slide-in installation mean for this range?
Slide-in ranges are designed to fit between adjacent cabinets with the cooktop overlapping the counter surface slightly, eliminating the gap that appears on each side of a freestanding range. The controls are on the front panel rather than a rear backsplash, which contributes to the cleaner look. Professional installation is recommended.
How large is the oven on the COS-RGS366SS?
The oven provides 6.1 cubic feet of usable space, which is a generous capacity for a 36-inch range. Two oven racks are included. This size accommodates a large turkey, multiple sheet pans, or an oversized roasting pan.
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