Our take
The MCM991RSL manual lists a 0.9-cu.-ft. cavity, 900-W output, separate 1,350-W input and 120-V/60-Hz supply. It also specifies a ten-level control and a flat countertop placement with four inches of ventilation space. The manual depicts a glass turntable but does not state its diameter or the cabinet finish. Preserve the exact MCM991RSL code; similar capacity and output do not establish that it is an MCM990ST variant. The old ASIN remains unverified.
Choose MCM991RSL for a documented 0.9-cu.-ft. cavity, 900-W output and 120-V/60-Hz supply. Kenmore 73779 has the same nominal size/output plus a documented 10.63-in. tray and black variant; Magic Chef's tray diameter and finish remain unknown, so compare the exact unit label and cookware fit..
Choose a larger or higher-output model if you regularly use wide dishes or require at least 1,000 W microwave output. This record does not establish a sensor function, trim kit, or finish.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The exact manual gives a 0.9-cu.-ft. cavity, 900-W output and separate 1,350-W input.
- A 120-V/60-Hz rating, ten power levels and digital timer are documented.
- The manual provides exterior/cavity dimensions and four-inch countertop ventilation guidance.
What to weigh up
- The 0.9-cu.-ft. capacity and 900-W output are below the large-cavity and 1,000-W options in this batch.
- Turntable diameter, finish, sensor operation, trim compatibility and commercial classification are unknown.
- The historical ASIN could not be verified as an exact MCM991RSL listing.
The key details
| Model covered | MCM991RSL |
|---|---|
| Capacity | The manual lists a 0.9-cu.-ft. cavity measuring 12.4 × 8.7 × 13.7 in. |
| Microwave output | Microwave output is 900 W; separate input is 1,350 W on 120 V / 60 Hz. |
| Cooking approach | Ten power levels and a digital 99:99 timer are listed; sensor cooking is not established. |
| Installation options | Manual requires a flat, level countertop and four inches of ventilation space; no trim kit is documented. |
| Finish and turntable | A glass turntable is shown, but diameter and exterior finish are not stated. |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
Preserve the MCM991RSL code
The manual cover names MCM991RSL, and the legacy Magic Chef catalog lists that same code with a 0.9-cu.-ft. cavity and 900-W output. Keep it distinct from MCM990ST, which appears elsewhere in the saved catalog. Similar brand, capacity, and output do not prove that one code is a finish variation of the other. The historical product title mentions digital touch, but this review relies on the exact manual for the documented 99:99 timer and controls. Check the complete model label on any offer before treating it as this product.
Use the interior dimensions for dish fit
Magic Chef lists 0.9 cubic feet and cavity dimensions of 12.4 by 8.7 by 13.7 inches. Its outside body measures 19.1 by 11.5 by 15 inches. These numbers help determine whether the unit fits on a counter and whether a container may clear the cavity, but they do not reveal the diameter of the glass turntable. Measure a round dish against the actual tray and leave clearance for it to rotate. The nominal volume is smaller than the 1.1-cu.-ft. and 1.5-cu.-ft. models in this group, which changes the cookware tradeoff.
Separate its 900-W output from input
The exact manual lists 900 watts of microwave output and a separate 1,350 watts of electrical input. It specifies 120 V AC, 60 Hz, single phase with grounding. The 900-W figure is the cooking-output rating, while input is relevant to the electrical demand; do not compare them as if they measured the same thing. This model does not meet a hard 1,000-W minimum, though a lower output may still be suitable for a routine that has no such requirement. Follow the exact nameplate and manual when planning the circuit.
A ten-level timer control without sensor evidence
The manual lists ten power levels and a digital timer up to 99 minutes and 99 seconds. It also documents express cooking and time additions through the start control. Those controls let the user choose timing and power directly. The reviewed exact model sources do not identify a humidity sensor, sensor reheat, or other automatic sensor function, so this profile leaves sensor status open. Do not inherit a sensor feature from another Magic Chef microwave just because the control panels share a similar layout or because a marketplace title uses broad terms.
Follow the flat-surface ventilation guidance
Magic Chef's installation section calls for a level, flat surface and four inches of free space above the oven. That requirement matters when setting the unit near shelves or beneath cabinetry. The manual shows a glass turntable and roller guide but does not give the tray diameter. It also does not identify an approved trim kit, so countertop placement is the supported path. Leave the clearance the maker specifies and check the body measurements; a close cabinet fit is not a substitute for ventilation instructions.
Keep unknown finish and listing identity open
The exact manual confirms the MCM991RSL code but does not identify an exterior finish in the saved evidence. Do not infer a color from the final letters or from MCM990ST. The historical Amazon page for B008P8EZVE did not verify the model, so the affiliate destination searches Magic Chef MCM991RSL. Confirm the code, finish, tray, and included parts on any seller page. No claim is made about a current offer, price, stock, sales rank, buyer reviews or a hands-on cooking test.
What else to compare
Compare a higher-output or larger-cavity model if your cookware needs more room. For a built-in installation or sensor cooking requirement, require exact model documents for those features.
Before you buy
What capacity and output are documented?
The manual lists a 0.9-cu.-ft. cavity and 900-W microwave output.
What electrical supply does it require?
The manual specifies 120 V AC, 60 Hz, single phase with grounding, and lists 1,350-W input.
Is turntable size known?
The manual shows a glass turntable but does not state its diameter.
Is MCM991RSL the same as MCM990ST?
No crosswalk is established; keep the exact model codes separate.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Magic Chef MCM991RSL owner manual and legacy manufacturer microwave catalog ↗ — checked October 11, 2026.
- Magic Chef exact MCM991RSL use-and-care guide hosted by Appliance Factory Parts; identifies the model and lists installation clearances, cavity, output/input, supply and power levels. ↗ — checked October 11, 2026.
- MC Appliance legacy manufacturer model catalog; exact MCM991RSL listing confirms 0.9-cu.-ft. capacity and 900-W output. ↗ — checked October 11, 2026.
- Historical Amazon page did not verify an exact MCM991RSL mapping during the saved source audit; the ASIN is not used as a direct destination. ↗Paid link · We may earn a commission. — checked October 11, 2026.
The decision
MCM991RSL is a 0.9-cu.-ft. countertop model with 900-W output, 1,350-W input, 120-V/60-Hz supply and ten power levels. Follow its flat-surface and four-inch ventilation guidance. Finish, tray diameter, sensor operation, trim compatibility and the historical Amazon match remain unconfirmed.
Is it the right fit?
Check the exact model and today’s offers on Amazon.