YGM Acoustic Rockwool® - Set of 2 | 4' x 2' x 3" | Sound Absorption Panels | NRC 1.0, 80 KG/M¬≥ Density | Room Isolation & Acoustical Soundproofing (Warm Beige) Brown Door Insulation Kit for Sliding Noise Reduction Gap High Density and Eco-Friendly -

High Density and Eco-Friendly - Made from 100% Polyurethane foam

STC > 18 DB

Package Dimensions: 11

better Sound Insulation than soundproofing foam

The surface area of this product is higher than egg tray due to its Pyramid design

YGM Acoustic Rockwool® - Set of 2 | 4' x 2' x 3" | Sound Absorption Panels | NRC 1.0, 80 KG/M¬≥ Density | Room Isolation & Acoustical Soundproofing (Warm Beige) Brown Door Insulation Kit for Sliding Noise Reduction Gap High Density and Eco-Friendly -The Professional Rockwool Acoustical Panels are Superior in sound absorption with NRC = 1 providing clearer, more enjoyable sound environment. 3 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 Absorption Built with a rear air cavity that improves sound