Guardhouse Single Row Slab - Black Box - 10 X 2.87 X 3.25The Guardhouse heavy duty coin slab box with a single row measures 10 x 2. 87 x 3. 25 and holds 26 certified coins or coin slabs. Manufactured with a high quality textured exterior, the Guardhouse heavy duty single row slab box features re enforced tape filaments, which give the box extra strength and durability. Guardhouse heavy duty slab boxes are colored black and are designed to fully enclose the coin slabs when placed inside. This makes the