The bass region is usually the most difficult to rectify and bring under control. The lower the frequency, the physically longer it´s wavelength and the more mass is required to influence its behavior.The WPBT-1 is a cost-effective and simple way to solve many of these problems. And although the WPBT-1 is a superb low frequency trap, it´s by no means confined to the bass region alone. It´s extraordinarily deep corrugations also act as veritable sonic black holes´ for room reverberation and other related anomalies, across virtually the entire frequency spectrum. Thus, the WPBT-1 could really be referred to as a broadband´ trap. Features:[ Fix your room acoustics simply and affordably[ Dramatically reduces room reverberation, echoes, and excess bass boom[ Reduces general room noise levels from internal and external sources[ Broad bandwidth sound absorption. Helps smooth out resonant waveform peaks across the entire frequency spectrum[ Treats a wide range of room sizes[ Simple installation [ Highly fire retardant. (Complies with the Australian standard: AS/NZS 4088.1 and British Standard Two 5852 with source 2 ignition)[ UV filter. Helps minimize color fading. [ Made with "Ultra-Fresh", anti-fungal & anti-bacterial agent, for a healthier working environment[ 2 x traps in each pack[ color: anthracite[ Made in Australia [ Dimensions: 600mm x 600mm x 300mm, 24 x 24 x 12in