First, check the load‑bearing capacity to ensure the bracket can safely hold your microwave’s weight. Next, compare the shelf dimensions with your appliance’s size to avoid clearance issues. Finally, look at the material, mounting hardware, and any extra features such as cable management or additional hooks that can add convenience.

Load capacity ranges from about 30 kg (66 lb) on the basic carbon‑steel models to 100 kg (220 lb) on heavy‑duty stainless‑steel brackets. A higher capacity gives you flexibility to mount larger microwaves or even add a toaster oven, while a lower capacity is sufficient for most countertop‑size microwaves and can be more affordable.

Stainless steel (e.g., the EsLuker.ly and SWOTCATER models) provides excellent rust resistance and a sleek modern appearance, making it ideal for high‑humidity kitchens. Carbon steel with powder‑coat paint, as seen on the ABCOOL racks, is strong and budget‑friendly but may show wear over time. Aluminum shelves, like the Goyappin option, are lightweight and rust‑proof, though they typically have a lower load rating than steel.

Adjustable brackets, such as the EsLuker.ly model with width ranges of 8.7–15.8 in and length ranges of 11.6–22.3 in, let you fit a wider variety of microwaves and can be repurposed for other appliances. Fold‑able designs save space when the microwave is not in use and add convenience, but they may involve more moving parts that could wear over time. If you need flexibility for different devices, the extra cost is usually justified.

Cable‑loop holes, found on the SWOTCATER and some stainless‑steel shelves, keep power cords tidy and improve safety. Hooks for towels, tools, or bags add storage without cluttering countertops, as seen on the B0FJYJGC3F shelf. A second tier, like the Nuanchu 2‑tier rack, provides dedicated space for spices or utensils, turning the mount into a multifunctional organizer.

Most shelves measure between 15 × 20 in and 24 × 18 in, covering the typical countertop microwave footprint of 12‑15 in wide and 9‑13 in deep. The Goyappin and Ganggend models offer two size options, ensuring a closer fit for both compact and slightly larger units. Always measure your microwave’s width, depth, and height before purchasing to confirm clearance.

All products include mounting hardware and instructions, but some, like the ABCOOL and B0FJYJGC3F shelves, use simple screw‑and‑anchor systems that most DIYers can handle in under an hour. The heavier stainless‑steel brackets (e.g., Hovico) may require locating wall studs and using stronger anchors, adding a few extra steps. Fold‑able or adjustable designs usually come pre‑drilled, making the process straightforward for most users.

For most homeowners, the ABCOOL carbon‑steel rack provides a solid balance of load capacity (up to 44 lb), easy installation, and a reasonable price, making it a cost‑effective choice. If you want higher durability and extra features like cable management, the SWOTCATER 18 × 24 in stainless‑steel shelf adds value with a 200 lb capacity and a polished look, though at a higher price point. Consider your microwave size, desired aesthetics, and any extra storage needs to decide which model delivers the most bang for your buck.