FSC Certified®. Security artline. Side Seam. #8. 3-5/8" x 8-5/8". 24 lb. Top Window Size: 1-1/4" x 3-1/2". Top Window Placement" 2-1/4" from bottom. Bottom Window Size: 1-1/4" x 4". Bottom Window Placement; 5/8" from bottom. 500 per box.