My First Time Building Sound Treatments: I built 48”x16” acoustic treatments. They're made out of spruce, and filled with 6” of Safe and Sound. I hung two at my first point of
Vintage Style Framed Acoustic Panel: 12 X 48 X - Etsy Sweden
How to Build Affordable, Professional Looking Acoustic Sound Treatment Panels – Behind Great Music
Felt acoustic panels Natural oak ⭐ - sample - official lameo® store
Acoustic Panels - Cinema Design Group
Grand Absorber, Acoustic Absorber - Bluetone Acoustics