4 PCS Acoustic Panels,48''X24''X2'' Egg Crate Foam Soundproof Foam Wall Panels,High Density Fireproof Noise Cancelling Foam Studio Foam Panel,Noise (Black)

Size48x24x2 inch Egg Crate Acoustic Foam. Creates an excellent recording environment. Environmental and SafetyThese acoustic foam panels are constructed from premium polyurethane high-density flame-retardant foam material. They are odorless, non-toxic, fire-resistant, durable, effective, safe for use, and meet flame retardancy standards. Ideal for Sound Recording and Video RecordingBy enhancing noise absorption within a space, they help minimize noise transmission through walls and consequently reduce noise outside the room. Professional acoustic treatment diminishes waves, reverberation, and flutter echoes in small to medium-sized rooms. Expands QuicklyThe foam panels are compressed in a vacuum-sealed package and rapidly return to their standard size.

This can be accomplished by placing them in a well-ventilated area for approximately 24-48 hours, or by soaking the foam in water for one minute, wringing out the water, and then using a hair dryer or allowing it to air/sun dry