Home > Products > Outdoor Living > Decking & Accessories > Postcaps & Tops > Hatteras Flat Top Post Cap Deckorators Hatteras Flat top post cap is available in Cedar and YPT. Available for 4×4 posts only. Purchase online at our TotalWood Store * Please select length and quantity to add to basket for quote. Additional Information In stock at our Raleigh store. Buy now through our TotalWoodStore.com site.