Base 277 Call For Quote $3.80 Interior Base 1/2″ x 3-1/2″ View Product Catalog Base 277 quantity Add to list Want a discount? Become a member. SKU: 277 Category: Mouldings Tag: mid-century modern Description Description Mid-Century Modern Clamshell base, a genuine clamshell of the 1950’s. 1/2″x3-1/2″ MAH277 – Sapele/Mahogany Available in random lengths