What distinguishes these feeders is the large-capacity polycarbonate hopper. The larger size holds 10 to 12 lbs. of seed; the smaller size holds 6 to 8 lbs. of seed. Simply remove the finial and use a funnel to fill with seed. The never-rot, white cellular PVC feeders come in two sizes: large or medium with a choice of copper roof. Made in the USA. Designate Bright Copper or Verdi Copper for the roof. For a vinyl post (4" x 4" x 6') see item #4737.