Our Mouldings › MA9008 Shiplap, 1/4" Gap Image 1 of 1 MA9008 Shiplap, 1/4" Gap $0.00 The item pictured is 5/8” thick x 3” wide. The gap produced by this shiplap is 1/4".Click here for a to scale PDF of this profile. Quantity: Add To Cart Added! The item pictured is 5/8” thick x 3” wide. The gap produced by this shiplap is 1/4".Click here for a to scale PDF of this profile.