Rollerfeeder model and buyer's guide.

Rf2 2010 Model Differences

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Note: All 2010 models are the same basic design and guaranteed squirrels proof. The color of the sides (red or green), Wire finish (gold or moss green) and the seed hopper (polycarbonate or steel) are the only differences. See more below.

Rf2 Cardinal squirrel proof bird feeder by RollerFeeder.

Green sides, Gold wire finish, Steel hopper

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Steel Seed Hopper versus Polycarbonate Hopper

Steel Hopper

Steel Seed Hopper is more heavy duty than plastic for tough animal problems.
Steel Seed Hopper has stainless steel mesh feeding sides and full length trays (both sides). Birds can pick seeds from the sides of the hopper or trays. There is also more exposed seed to pick seeds from the sides or trays.
Steel Seed Hopper has tighter seed trays to prevent seed spillage during a squirrel attempts.
Steel Seed Hopper accommodates black oil sunflower seed or sunflower in the shell/sunflower hearts/safflower mix/small peanut parts. This seed mix is considered one of the best bird seed mixes.

Plastic Hopper

Plastic hopper accommodates all seed types.
Plastic Hopper has full length seed trays, both sides.
Plastic Hopper is medium duty versus more heavy duty steel above.
Plastic Hopper has steel tray edges to prevent squirrel damage, Steel is built-in.
Plastic Hopper is clear for a little better view of the bird seed but both hopper types do well since seed is exposed in the steel mesh sides, shown in above feeder.
Both hoppers hold approx 4 lbs seed, depending on seed type.