JCs Wildlife Window Bird Feeder Lg Classic 13" Acrylic holds 4 cup Enjoy watching wild birds up close--right at your window. Feeder opening is the largest available in this size feeder-- allowing for easy filling and cleaning 3 large suction cups are the best you can buy - these are not cheap and flimsy imports (2 on top and 1 on bottom) Suction cups with stainless steel screws will hold up your feeder unaffected by weather and temperature This item proudly made in the USA.