Made in the USA from woven polyethylene, the Sunscreen Top provides 80% sunblock protection. Measures 4' x 4'and includes #2 brass grommets around the edge spaced as 12'' apart with 16 plastic wire ties to affix the top to the exercise pen. Compatible with the following pens when setup as a 4' x 4' square: 540-24, 542-30, 544-36, 546-42, 548-48, 501-24, 503-30, 505-36, 507-42, 509-48.
