The 2SKB-3613D Custom Shotgun Case has a rugged HDPE shell, with a custom interior to fit two receivers with two barrels up to 35". The 2SKB-3613D Custom Shotgun Case features SKB's unique Perfect Match Valance Bending System for a perfect seal. Weather resistant, stackable, solid die cast zinc locks with chrome plating come standard. EPS interior is made from the same material specifications as that used in children's bicycle helmets. The 2SKB-3613D Custom Shotgun Case is backed by SKB's Unconditional Lifetime Warranty. Interior Dimensions: 36" x 13" x 5"