How to Install Standard Linear Slot Diffusers

How can I get rid of white noise coming from my AC vents? (They're currently linear slot diffuser style vents and I'm wondering if that's

Perfect for creating long runs in large open areas, Linear Slot Diffusers are a popular choice for increasing ventilation Now available with a range of

linear slot diffuser with plenum box Buy Standard Linear Slot Diffuser - Texas - Modern AC Vent Covers for Ceilings, Walls & Floors - Commercial Grade HVAC Registers, Grilles & Vents

linear rail vs v slot These linear slot diffusers feature fully adjustable, aerodynamic pattern controllers fabricated from extruded aluminum, and are available in a large selection