Plinth Poplar Call For Quote $5.93 Plinth block Poplar: 1-1/16″ x 7-1/4″ View Product Catalog Plinth Poplar quantity Add to list Want a discount? Become a member. SKU: Pplinth Category: Mouldings Description Description Poplar plinth. Sold by the 1/2 foot, priced by the foot. PPLINTH – Poplar, available in random lengths