Misc. Barn cleanout (exterior parts)

sabre67 said
Hi what is the diameter of those caps across the back? and what is the shipping to 98281 Washington State Thanks sabre67

sabre67 said
PM sent for quote

i am calling it 10 and a 1/8 from what I can see on my tape measure

they fit very nice into a USPS flat rate box so it will be $17.90 to ship anywhere in the 48