Frames are 100% welded aluminum angle with 10" wide planks. The first row has a seat height of 18". 5-year limited warranty. QUICK SHIP! FT-BL321: 3 rows; 21'L x 30"H x 60"D; 280 lbs., single foot plank, seats 42 FT-BL321P: 3 rows; 21'L x 30"H x 60"D; 360 lbs., double foot plank, seats 42 FT-BL327: 3 rows; 27'L x 30"H x 60"D; 367 lbs., single foot plank, seats 54 FT-BL327P: 3 rows; 27'L x 30"H x 60"D; 476 lbs., double foot plank, seats 54 (Picture is of 3-row, 15'L, single foot plank bleachers.) Call our customer service to order colored seat planks (red, royal blue, navy blue, or forest green); ALSO QUICK SHIP!
