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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe Breville Silhouette Compact Flatbed LMO420 is a 20 L, 800 W microwave with no turntable. Its main appeal is a flat cooking floor and compact exterior; whether it suits you depends on your dish dimensions, counter space and access to the ventilation clearances the manual requires. Breville advertises more usable cooking area than one of its turntable models, but that is a manufacturer comparison—not an independent performance result.
What is the Breville LMO420BLK?
Breville identifies the product as the Silhouette Flatbed Compact LMO420; CHOICE lists the model as LMO420BLK. Check the model suffix on the exact unit you are considering, since regional variants may differ.
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Instead of a rotating glass plate, the microwave has a flatbed cooking surface. Breville says this makes the surface easier to clean and advertises 30% more usable cooking area than its Quick and Easy BMO300BSS 34 L turntable microwave. That figure is Breville’s comparison with that specific model, not a general claim about all turntable microwaves or an independent measurement. Breville’s LMO420 product page
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The official manual lists the ANZ model’s dimensions and electrical specifications below. External dimensions matter for counter placement; cavity dimensions are more useful when checking a dish. The 20 L capacity alone does not establish that a particular plate, casserole or container will fit.
#1 Best Overall
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- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Specification | Breville LMO420 ANZ manual |
|---|---|
| Capacity | 20 L |
| Microwave output | 800 W |
| Power consumption | 1200 W |
| Supply | 230–240 V / 50 Hz |
| External dimensions (H × W × D) | 271 × 457 × 362 mm |
| Cavity dimensions (H × W × D) | 180 × 315 × 329 mm |
| Approximate net weight | 9.5 kg |
Measure your dish at its widest point and compare it with the cavity’s 315 mm width and 329 mm depth, allowing enough room to place and remove it. Also check the dish height against the 180 mm cavity height. CHOICE independently lists rounded external dimensions of 27 × 45 × 36 cm, 800 W output and six power levels. Its public listing does not provide detailed internal dimensions. CHOICE’s LMO420BLK listing
What controls and cooking functions does it offer?
Breville lists eight auto-cook menus: beverage, rice, pasta, potato, reheat, porridge, pizza and popcorn. The product page says an auto-cook selection adjusts cooking time and power. It also describes a +30-second instant-start shortcut. These functions offer preset options, but their presence alone does not show that they cook better than manual settings.
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What clearance does the LMO420 need?
The manual says to leave at least 20 cm between the microwave and adjacent walls, and at least 30 cm above it. It requires circulation space and says not to install the unit in a cabinet. Keep it away from heat- or steam-sensitive materials, and do not place it over a cooktop or another heat-producing appliance. Confirm the manual supplied for the exact variant you buy, especially if it is not the ANZ model. Breville LMO420 instruction manual
These requirements can make the microwave a poor fit for a tightly enclosed shelf or cabinet even if its exterior dimensions fit. Plan for the specified clearances before choosing a counter location.
Rank #3
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Is there independent evidence of cooking performance?
CHOICE has a model-specific listing, but its Expert Rating, cooking-performance categories and detailed pros and cons are restricted to members. The public page supports basic specification comparisons; it does not establish a performance score or a conclusion about how well the microwave heats food. The manufacturer’s feature claims should therefore be kept separate from independent test results.
Safety and routine care
- Do not use the microwave if its door or seals are damaged. The manual warns that repairs involving removal of the protective cover are hazardous unless performed by a Breville Service Centre.
- Do not heat sealed containers. Monitor microwave-safe or paper containers while heating because they may ignite.
- Wipe the cavity after use and remove food splatter regularly. The manual warns that poor cleanliness can degrade surfaces and create a hazardous situation.
Who should consider it?
The LMO420 is worth considering if you want a turntable-free 20 L microwave, can meet its ventilation requirements and have dishes that fit its 315 × 329 mm cavity floor. Its compact exterior may suit a counter where a larger appliance would not, but the required space around it still matters.
Rank #4
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Look elsewhere if your regular cookware is wider or taller than the cavity allows, your only available space is an enclosed cabinet, or your local electrical supply does not match the unit’s rating. The manual’s figures are for the ANZ model: 230–240 V / 50 Hz. Check the label and exact manual for the version sold in your market rather than assuming compatibility from the model name alone.
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Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
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