FRAME: 2 7/8" O.D. steel pipe with welded 3/8" x 3" steel bar contour seat supports. Permanent installation. SLATS: 2" x 4" nominal. Available with #1 pressure treated southern yellow pine, clear all heart, free of heart center redwood, clear douglas fir, Pau Lope®, or recycled plastic. HARDWARE: Stainless Steel. FINISH: Polyester powder coated frame. MODEL NO. 389-6T 389-6R 389-6D 389-6P 389-6PL 6' Treated Pine 6' Redwood 6' Douglas Fir 6' Pau Lope® 6' Recycled Plastic