The Blue Bell NO/NO feeder has 35-inch of open feeding trough protected by an overhanging roof. Fill with black oil sunflower seeds or a mixture of sunflower/safflower seeds. Lasts for years and years, no assembly required. Holds up to 2-1/2-pound of Black Oil sunflower seeds. Squirrel damage resistant. No cleaning required but dishwasher safe if you insist. Rain or snow just runs or blows right through it.