Our take
Sharp's exact R-451ZS manual and R451ZS specification sheet verify a countertop microwave with a 1.3-cu.-ft. cavity, 1,000 W cooking output, ten power levels, sensor cook and reheat, and a removable 12.75-in. glass turntable. The model sheet's detailed design block describes a black cabinet and door with stainless trim, but marketing copy on that same sheet says brushed stainless finish. I leave the finish unsettled instead of transferring either description to the historical Amazon record. B00LMNSU7Y did not load, so the link searches for Sharp R451ZS and includes buyershortlists-20. This is a documentation-based review, not a personal test or buyer-review summary.
A mid-size countertop candidate for buyers who want documented sensor cook/reheat and a large turntable, and can verify finish and ventilation requirements from the exact unit..
Do not choose it if you require a confirmed all-stainless finish, a supported trim-kit installation, a verified match to ASIN B00LMNSU7Y, or commercial foodservice classification. Confirm the exact label and overhead ventilation instruction before buying or placing it.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Sharp documents a 1.3-cu.-ft. cavity, 1,000 W microwave output and ten power levels for this exact model.
- Sensor Cook and Sensor Reheat are named in the model documentation, with the operation manual describing humidity-based timing adjustment.
- A removable 12.75-in. turntable and time/weight defrost are documented in the product sheet.
- Sharp states that no trim kit is available and identifies the model as a home-use microwave, which makes the installation and duty limits explicit.
What to weigh up
- The spec sheet conflicts with itself: a detailed table says black with stainless trim, while its marketing copy says brushed stainless finish.
- The manual contains different overhead-clearance wording; check the instructions supplied with the actual unit before allowing space above it.
- The product sheet says Trim Kit No, so it is not a documented cabinet trim-kit candidate.
- Amazon B00LMNSU7Y returned an internal error; no exact ASIN-to-model/finish match is established.
The key details
| Model covered | R451ZS |
|---|---|
| Capacity | 1.3 cu. ft. cavity |
| Microwave output | 1,000 W microwave output |
| Cooking approach | Ten power levels; Sensor Cook and Sensor Reheat with humidity-based adjustment; time/weight defrost and +30-second/start control |
| Installation options | The exact product sheet states no trim kit; the operation manual classifies it as home use; flat-surface setup requires three-inch spacing and overhead guidance differs within the instructions, so check the exact unit's manual |
| Finish and turntable | Removable 12.75-in. glass turntable; finish remains unresolved because the same product sheet says black cabinet/door with stainless trim and brushed stainless finish |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
The model identity is clear; the finish is not
Sharp's operation manual names R-451ZS, and the exact R451ZS product sheet uses the same code without the punctuation hyphen. These are two renderings of the same model code, not evidence of a separate variant. The frozen title adds a stainless-steel finish claim, and the sheet itself supports conflicting readings: its detailed design block says black cabinet and door with stainless trim, while its promotional text says brushed stainless finish. The document does not explain whether one statement describes a particular panel or variant. I therefore leave finish unresolved and do not map inaccessible Amazon B00LMNSU7Y to either appearance. Compare the printed model and seller photos before treating a current offer as this model.
Capacity and cooking output are separate, documented ratings
Sharp lists a 1.3-cu.-ft. cavity and 1,000 W energy output, alongside separate electrical-input and supply information. That distinction matters: the output rating is the microwave cooking figure, while input describes what the appliance draws electrically. Ten power levels and time/weight defrost add documented control choices. The cavity rating is only a broad measure of space; it does not guarantee that a favorite casserole or tall mug will fit. Check opening dimensions and dish clearance against the actual interior instead of relying on capacity alone. These ratings describe the manufacturer's specifications and do not establish cooking speed or results for a particular meal.
Sensor cook and reheat differ from fixed presets
The R451ZS sheet names Sensor Cooking and Sensor Reheat, and the operation manual includes both sensor controls and a section describing humidity-based time adjustment. That is direct model-family evidence for sensor functions, rather than an inference from an auto-menu label. The microwave also includes standard timed and weight-based controls, so buyers can choose whether to use the sensor programs. Follow Sharp's guidance on food covering, placement and sensor categories; the rating does not promise an ideal result for every portion or container. The controls are one reason this model differs from simpler timer-only options in the category.
Measure dishes against the 12.75-inch turntable
Sharp specifies a removable 12.75-inch glass turntable. This gives a more concrete cookware comparison than cavity volume alone, but the diameter is not the usable width of every dish: round cookware needs room to rotate, and rectangular pieces may meet the oven walls or turntable edge. Measure the base of the dishes you intend to heat and compare those measurements with the interior. The sheet calls the tray removable, which identifies a cleaning-related design feature, but does not establish that another tray will fit. Use an exact replacement part if the supplied tray is missing or damaged.
Plan for countertop ventilation and the home-use limit
The product sheet explicitly says Trim Kit No, while the manual instructs countertop placement on a flat surface and gives ventilation spacing. Its installation text includes three inches around the microwave and also provides a separate overhead recommendation that differs from earlier clearance wording. Leave enough space to follow the manual for the exact unit rather than treating a built-in trim kit as an option. The operation manual calls R-451ZS a Home Use Carousel Microwave Oven, so the documentation does not establish commercial foodservice duty. The exact sheet says no trim kit is available, and the manual identifies R-451ZS as a Home Use model; neither supports commercial foodservice certification.
Use a model search until the historical ASIN is proved
The old Amazon page for B00LMNSU7Y returned an internal error when checked. That leaves the ASIN's exact model, finish and current relationship to R451ZS unresolved. The destination therefore searches Amazon for Sharp R451ZS and carries buyershortlists-20; it does not claim that the historical identifier is a direct match. Check the current item label for R451ZS/R-451ZS and read the seller's finish description against the conflicting Sharp sheet. No current price, inventory, sales figure or Amazon buyer-review summary is asserted here.
What else to compare
If you require an unambiguous finish, a confirmed trim-kit installation, or foodservice duty, choose a microwave whose exact model documentation confirms those points. Sharp R451ZS remains a documented 1.3-cu.-ft. sensor model with 1,000 W output and a 12.75-in. turntable, with its finish and Amazon identity limits stated above.
Before you buy
What model is documented?
Sharp's operation manual identifies R-451ZS, and its exact product sheet labels the same code R451ZS without the punctuation hyphen.
What are the capacity and microwave output?
Sharp lists 1.3 cu. ft. and 1,000 W energy output. Electrical input is a separate specification.
Does it have sensor cooking?
Yes. Sharp names Sensor Cook and Sensor Reheat, and the operation manual describes humidity-based time adjustment.
What turntable does it use?
The product sheet lists a removable 12.75-in. glass turntable. Compare your dish dimensions with the interior and turning clearance.
Is the exterior stainless steel?
Sharp's sheet conflicts: the design block says black cabinet and door with stainless trim, while marketing copy says brushed stainless finish. The exact finish of the historical offer remains unresolved.
Can it be built in with a trim kit?
No. Sharp's exact product sheet states Trim Kit No.
Is commercial use documented?
No. The operation manual calls it a Home Use Carousel Microwave Oven; commercial foodservice duty is not documented.
Does ASIN B00LMNSU7Y identify this model?
That Amazon page returned an internal error. Use the tagged Sharp R451ZS model search and verify the full code on the current item.
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.
- Sharp R-451ZS Operation Manual and R451ZS model specification sheet ↗ — checked October 5, 2026.
- Sharp USA R-451ZS Operation Manual checked 2026-10-05. Page 1 identifies the model; page 2 calls it a Home Use Carousel Microwave Oven; page 5 gives flat-surface placement and clearances; page 6 lists supply, 1.3-cu.-ft. cavity, 1,000-W output and ten levels; page 8 names sensor cook/reheat and +30 seconds, and the sensor section describes humidity-based operation. The overhead clearance wording differs within the instructions. ↗ — checked October 5, 2026.
- Sharp USA exact R451ZS product sheet checked 2026-10-05. Its detailed design block says black cabinet/door with stainless trim and Trim Kit No; features list 1.3 cu. ft., 1,000 W, sensor cook/reheat and a removable 12.75-in. turntable. Marketing copy on the same sheet calls the finish brushed stainless steel, so finish is left unresolved. ↗ — checked October 5, 2026.
- Historical Amazon ASIN page returned an internal server error when reopened 2026-10-05. No exact-ASIN proof; the merchant destination is a tagged exact-model Amazon search. ↗Paid link · We may earn a commission. — checked October 5, 2026.
The decision
Sharp verifies R451ZS/R-451ZS as a 1.3-cu.-ft., 1,000-W countertop microwave with sensor cook/reheat, ten levels and a removable 12.75-in. turntable. The exact sheet conflicts about finish, says no trim kit, and the operation manual labels it for home use. Its overhead clearance wording also needs checking against the unit's own instructions. Amazon B00LMNSU7Y did not load, so use the tagged exact-model search and confirm the label.
Is it the right fit?
Check the exact model and today’s offers on Amazon.