Wainscot 778 – Fir Call For Quote $2.37 Interior and Exterior Bead Board Fir: 3/4″ x 3-7/16″ View Product Catalog Wainscot 778 - Fir quantity Add to list Want a discount? Become a member. SKU: 778 Categories: Exterior, Mouldings Description Description Tongue and Groove Wainscot or Flooring 3/4″ x 3-7/16″, Face width = 3-3/16″ F778 – Fir available in random lengths.