Casing 131 Call For Quote $1.61 – $12.88 Interior Door and Window Casing Red Oak: 9/16″ x 2-1/4″ View Product Catalog Size Choose an option… spec 8'RL Clear selection Casing 131 quantity Add to list Want a discount? Become a member. Want a discount? Become a member. SKU: 131 Category: Mouldings Description Additional information Description Clamshell casing, a classic Mid-Century Modern Casing. O131 – Red Oak Available in random lengths O131SP8 – Red Oak Available in Specified 8′ lengths Additional Information Size spec 8′, RL