I bought two of the assemble-it-yourself kits (only difference is you screw it together) for this feeder, and they are wonderful. Water drains easily out of the mesh bottom, and the feeders are big enough for the cardinals to use, but small enough to make it difficult for the grackles to sit and stuff themselves with seed.  The red-bellied woodpeckers can hang on to eat though.  Easy to clean with a removable roof, and plexiglass sides.  I really like the poly-lumber too, as I have had woodpecker tear up a few cedar feeders in the same style.  It's been two years in upstate NY weather, and these feeders look like they're new.