POLY-Z-BRITE® STARTER UNITS WITH DUNNAGE BOTTOM SHELF ARE DESIGNED WITH A CLEAR EPOXY FINISH THAT HANDLES TEMPERATURE AND MOISTURE EXTREMES WELL. STARTER UNIT INCLUDES 4 POSTS WITH LEVELING FEET 3 WIRE SHELVES 1 BOTTOM DUNNAGE SHELF AND PLASTIC SNAP ON SLEEVES TO SECURE SHELVES TO POSTS.