Triangular Pyramid Style - The perfect design for the Trihedral Edge Low-Frequency problem.,16.5" Triangle 12" Depth - Effectively reduce low-end wavelengths with Large Size and Deep Depth,DIY Your Home Studio - Install with sound proof foam panels to make your room a Pro-Quality Studio,High-Quality Polyurethane Foam - Excellent sound absorption due to the large cell size of the Foam,Strict Quality Control Standards - Product quality issues are most important to us. We comply with strict quality control standards and produce sound foam using high quality