Auralex 3" Studiofoam Wedge-24
"Twice as absorbent as 2 inch at 125Hz, 3 inch acoustic Studiofoam Wedges can even do many of the same things 4 inch can do (especially when used with LENRD or Venus Bass Traps) and can provide a well-controlled, more accurate sound in any size room.Recommended for rooms with higher SPLs (Sound Pressure Levels) or more low frequencies such as drum or voiceover booths. Rooms have more low-end problems than some folks acknowledge, so if you step up from 2 inch to 3 inch you will benefit from the extra low-end sound absorption 3 inch Studiofoam Wedges offer. NRC: .90 Qty: 8 panels Coverage: 64 sq. ft.Sugg. Adhesive Per Box: 1 Foamtak or 2 Tubetak. Available in Charcoal, Purple, Plum, Blue, Beige, Brown, Burgundy, Red, Orange, Kelly Green, Forest Green and Teal."