30" Slim Over-the-Range Microwave

COS-3012ORLP1SS

Save space in your kitchen with Cosmo’s 1.2 cu. ft. Slim Over the Range Microwave. A powerful fan ventilates steam and smoke from your cooktop, while the 1000 watts of cooking power in the microwave let you prepare dishes quickly and easily. Smart sensor cooking detects when your food is ready and shuts off the microwave at just the right time. 11 power levels give you precise control to melt, soften, or defrost various foods. Sleek touch controls and a large digital display make this slim over the range microwave easy to use. The Cosmo Stellar Collection offers reliability with essential features, providing a straightforward solution for those who seek practicality in an appliance.

Check out our interactive Feature Gallery for more information!

Product Highlights

11 Power Levels

1000 Watts with 11 power levels for precise control. Sensor Cook and Sensor Reheat programs allows you to input pre-measured food–including popcorn, potato and more–and calculates the appropriate cook times.

Touch Presets

Presets include Beverage, Dinner Plate, Bacon, Soup/Sauce, Casserole/Lasagna. With the Popcorn function, get fully “popped” popcorn simply by entering the bag size.

Powerful Vent Fan

A powerful over the range fan ventilates steam and smoke from your cooktop with high and low settings. Interior light and removable glass turntable included.

Powerful Output

Utilizes 1000 watts of power to achieve delicious results.

Easy Controls

Touch presets for convenient tasks and functions.

Black Glass

Sleek black glass finish brings a modern look to the kitchen.

Vent Fan

Vent fan below traps steam and smoke with high and low settings.

5.0
5.0 out of 5 stars (based on 9 reviews)
Excellent100%
Very good0%
Average0%
Poor0%
Terrible0%

Engineering and Design delight

November 9, 2025

Designed by someone intelligent that thought of real world improvements over competitors.

Clock: If you choose to not set the clock, it stops blinking after a few minutes. Also can simply set it OFF setting. Especially nice if you want the room dark at night. No perpetual blinking. Intuitive to set clock.

Door: Easy grab from bottom or side is huge… no wrong guessing when reaching to open and no smashing fingers (could be a music band name) when closing the door. See photo of finger depth even when door is closed.

keypad buttons have correct visible contrast, unlike a different brand that was unreadable if you didn’t turn on bright lights in your kitchen. Get a snack at night without disturbing your circadian rhythm with light, and can use the buttons after your night vision is limited because you just opened your bright fridge before you go to the micro.

Huge inside… like an expansive warehouse. Cosmo fully utilizes the width and depth of the slim cabinet to maximize the interior capacity. Turntable plate is an inch larger diameter than another brand’s 30″ slim.

also Cosmo is about an inch slimmer height, so more space for cooking on your range.

fan is really strong, and quiet, and simple two speeds means less cycling the button through multiple speeds when intending to turn it off.

range light is bright, and LED low power and cooler, no scorching hands on halogen when lifting up a spoon from a pot or burning back of my bald head when I wanted to sniff what’s on the range. Simple two brightness settings. No need to cycle through a night-light setting because the LED clock offers nice night illumination (or turn it off if you want).

I truly appreciate intelligent design and this Cosmo microwave is great, and good looking.

Paul Hamilton

Satisfied purchase!

October 9, 2025

I have been looking for a low profile microwave for a couple years now. As our kitchen cabinets above the stove are not high enough. I am so glad I found this microwave because not only does it match our stove perfectly, it goes great with the kitchen. Feels nice to have a microwave off of the counter that actually heats our stuff quickly and doesn’t take double the time.

Gabrielle Vasquez

Easy instal great value

May 21, 2025

I really like how easy he was to install and the slickness and the build of the microwave. Took Me in another person about 20 minutes to install. The product was packaged well.

Dirk patterson

Great product!

April 23, 2025

The 30 inch slim over the range microwave is a great choice for our family. Easy installation and user friendly controls. The unit also very quiet.

Michael H Williams

Wonderful upgrade to our kitchen

June 28, 2024

This is a replacement for a ten-year-old OTR range. I really enjoy the brighter lighting provided by the LED, and am able to better see the surface of my range (I am 6’4” tall, and the slimline construction improved my line-of-sight). The microwave controls are very much like the Electrolux it replaced and required no learning curve. It is solidly built and a wonderful addition to our kitchen.

Stuart Johnson