48 Pack of (12 x 12 x 1)Inch Acoustical Pyramid Foam Panel for Soundproofing Studio & Home Theater by ShopBox&reg; (Charcoal) 48 Pack of (12 x 12 x 1) Inch Acoustical Pyramid Foam SPECIFICATIONS: Quantity = 48 Pack of Pyramid Acoustic Foam; Panel Size = (12 x 12) Inches; Panel Thickness = 1 Inch; Available Colors = Charcoal, Red, Orange, Rosy Beige, Brown, Burgundy, Blue, Purple, Plum, Teal, Kelly Green, and Forest Green; Overall NRC: 0.35 For basic soundproofing, 1 inch pyramid foam provides moderate sound control on walls or ceilings, especially ones not parallel to the floor. This product is best for when absolute sound deadening is not required, but moderate deadening is desired. 1 inch pyramid foam is most effective on mid-to-high frequency ranges Flammability Test Results: Class A; 25 Flame Spread Index; 250 Smoke Spread Index FREE SHIPPING: This item ships by UPS Delivery time is usually 7 to 12 business days from purchase date. Please allow 5 to 7 business day for tracking to update. Our Acoustical foam products are cut and packaged at the time of order in order to provide a top quality product. Acoustical foam that is packaged for long periods can become deformed over time.