Usually 3-5 Days. 45 Day Lowest Price - 100% Satisfaction Guarantee. The D36 offers you a starting point to reduce unwanted slap and flutter echo in your room and that designer look. Contains 18 Charcoal Gray DST-112 panels and 18 DST-114 panels in your choice of Charcoal Gray, Purple, Burgundy, or Blue with 2 TubeTak Pro Adhesives.