Over-the-Range Microwave Mounting Brackets and Filler Kits

On this page (8 sections)

1. Over-the-range microwave mounting bracket: what it holds
2. Matching a replacement bracket to your GE part number
3. When you need a filler or trim kit
4. Who should mount the bracket?
5. Filler kits: sizing and fit
6. Common bracket problems and what they mean
7. How to plan a bracket and filler swap
8. Which bracket or kit should you buy?

An over-the-range microwave relies on two small parts that are easy to overlook. The mounting bracket holds the unit to the wall or cabinet, and a filler kit closes the side gap when the opening is wider than the microwave.

Both parts are inexpensive, but the wrong one can leave the microwave loose or the cabinet gap open. Match the part number before you order.

If you're replacing a unit, check the bracket first, since many replacements reuse it.

Over-the-range microwave mounting bracket: what it holds

The mounting bracket is a steel plate that holds the microwave up above the range. It screws into the wall studs or a solid cabinet frame, so the plate carries the unit's weight.

The bracket also keeps the unit level, which matters for the door. A level unit closes square and seals the way it should, while a tilted one can rub or fail to latch.

A loose or bent bracket can make the microwave wobble. If the unit moves when you open the door, call a qualified installer to check the bracket and the screws before you blame the microwave.

Matching a replacement bracket to your GE part number

Start with the part number on the old bracket or in the manual. Replacement kits are sold by GE part number, so the number is the fastest way to find a match.

BigHead says its kit replaces GE part WB56X35363 and several other numbers, and it includes a level and the screws. IWIWE sells a plate for the same part, made from 22-gauge galvanized steel.

Check the number against your model before you order. A bracket that looks right can still have different hole positions.

GE over-the-range microwave mounting bracket part number checklist

Before you order a replacement, work through this list:

• Find the part number on the old bracket, which is often printed on the plate.
• Check your model number in the manual's parts list, and match it to the bracket number.
• Compare the hole positions on the new plate with the old one, and count the mounting holes.
• Confirm whether the screws and the level come with the kit, or buy them separately.
• Keep the old bracket until the new one is in place, so you can compare them side by side.

When you need a filler or trim kit

A filler kit is needed when the cabinet opening is wider than the microwave. It closes the gap on each side, so the cabinet looks finished and the opening doesn't show.

A common case is a 30-inch microwave in a 36-inch cabinet. Tatuo says its trim kit is sized for that setup, with side panels about 3 inches wide and 15.75 inches tall.

Measure the gap on each side before you order. A kit that's too narrow leaves a visible gap, and one that's too wide won't sit flush.

Who should mount the bracket?

A qualified installer should mount the bracket. It carries the full weight of a unit that runs roughly 40 to 61 pounds over a hot cooktop, so it has to bite into wall studs or solid framing, not drywall alone.

Ask the installer to check the wall and the cabinet first, and to use only the screws that come with the kit or the unit. A loose mount can drop a heavy unit.

A licensed electrician should handle any wiring, and the power stays off until the unit is fully mounted. Our installation guide covers the planning steps before the work starts.

Filler kits: sizing and fit

A filler kit should match the gap on each side, not the total width of the opening. Measure the gap on the left and the right separately, since one side is often wider than the other.

Trim kits are usually sold as side panels, with a width and a height. Check both numbers against the gap and the cabinet height, so the panel covers the gap without sticking above the cabinet.

If the panel is too narrow, the gap shows, and if it's too tall, it sits above the cabinet edge. Measure first, and keep the packaging until the panel is fitted.

Common bracket problems and what they mean

A loose unit often points to the screws or the studs, not the microwave itself. Ask the installer to confirm that each screw bites into solid framing, and to fix any that feel soft.

A door that won't latch often means the unit sits out of level. Have the installer adjust the bracket or the mounting position until the unit sits square, then check the door again.

A visible gap at the side points to a filler that's too narrow. Measure the gap again, then order a panel that covers it.

How to plan a bracket and filler swap

Measure the opening, the cabinet depth and the height of the old unit, then compare those numbers with the new unit. Our dimensions guide explains each measurement.

Tell the installer the old bracket's part number, hand over the new bracket and filler kit, and keep the old screws and bracket together until the job is done. The installer sets the bracket before the microwave goes up.

If you're swapping the whole unit, our replacement guide covers the planning from start to finish, and the removal guide explains what the pro does with the old unit.

Which bracket or kit should you buy?

Buy the bracket that matches your part number, and buy a filler kit only if the cabinet opening is wider than the unit. Give both to a qualified installer rather than mounting them yourself.

If the microwave also needs a new charcoal filter, our charcoal filter guide explains how to match that part too.

Frequently asked questions

What does a microwave mounting bracket do?

It holds the microwave to the wall or cabinet above the range. Most over-the-range units hang from a mounting plate that screws into studs or solid framing, so the bracket carries the weight of the unit.

What is a filler kit for an over-the-range microwave?

A filler kit is a set of side panels that closes the gap when the cabinet opening is wider than the microwave. Tatuo says its trim kit fits a 30-inch oven in a 36-inch cabinet.

Can I use any mounting bracket on my GE microwave?

Only if the part number matches your model. Bracket kits are sold by GE part number, such as WB56X35363, so check the number on your old bracket or the manual before you order.