Z-Barrier - Generator and Equipment Noise Barrier — ZombieBox
Open Box Sony WH-1000XM4 Wireless Premium Noise Canceling Overhead Headphones with Mic for Phone Call and Alexa Voice Control, Black - Walmart.com
Noise Protection Box, Large | iUltrasonic Ultrasonic Cleaners
Plasma-based noise cancelling could silence rooms, cars and planes
Open Box Sony WH-XB910N EXTRA BASS Noise Cancelling Headphones, Wireless Bluetooth Over the Ear Headset with Microphone and Alexa Voice Control, Black - Walmart.com
Review of Pawnix Sound Cancelling Headphones for Dogs: Unlikely to Work as Described - eileenanddogs
AV52 Bluetooth Noise Cancelling Headphones – ZVOX Audio