This square 48" fiberglass picnic table is a great addition to your park or school. The 'J' style frame is made of either black powder coated or standard galvanized 1 5/8" O.D. pipe. Top and seats are made of fiberglass with a heavy center cross brace that stabilizes the entire unit. This table with stay stable even on an uneven surface. This table is popular in schools because the flat surface provides a great table for writing. The four attached seats have a unique walk-through design for easy access.