Usually 3-5 Days. 45 Day Lowest Price - 100% Satisfaction Guarantee. Built to ATA specifications. These cases feature a 5mm plywood exterior with tongue and groove aluminum valence, Spring loaded handles and recessed wheels. The plush interior includes padded straps to hold your keyboard in place, and 4 black Polyethelene wedges to assist in proper fit. Available in 61, 76, 88, and 88 Slim keyboard sizes (for interior dimensions, see below).