YGM Acoustic Rockwool® - Set of 8 | 4' x 2' x 1.5" | Sound Absorption Panels | NRC 0.92, 80 KG/M¬≥ Density | Room Isolation & Acoustical Soundproofing (Deep Maroon) Gasket Soundproofing heat the acoustic wall panels

heat the acoustic wall panels with a hair dryer before peeling it off；this helps to prevent damage to the wall

The All new high performing turbo Acoustic Foam panels are best for echo reduction

Step 2 - Adjust/Cut Door Seal with the LINEMAN PLIER/PLASH if you door is less that 3 feet

YGM Acoustic Line Diffusers are the great solution for small flutter echo problem areas and

YGM Acoustic Rockwool® - Set of 8 | 4' x 2' x 1.5" | Sound Absorption Panels | NRC 0.92, 80 KG/M¬≥ Density | Room Isolation & Acoustical Soundproofing (Deep Maroon) Gasket Soundproofing heat the acoustic wall panelsThe Professional Rockwool Acoustical Panels are Superior in sound absorption with NRC = 0. 92 providing clearer, more enjoyable sound environment. Size: 4 feet x 2 feet with 1. 5 inches of thickness. 1. 5 Inch Thick High Density Acoustic Core Extra depth provides superior low frequency absorption, effectively reducing echo, reverberation, and mid bass buildup for clearer speech and tighter, more controlled sound. Integrated 1 Inch Air Gap for Enhanced