Hi Brad: Thank you for your question for Item Internet # 305390309 Terrazzo Medium Square Hot Tub Cover Cap. OUTDOOR PATIO COVER is Guaranteed to fit square hot tubs 86"W x 86"D x 14"H. Actual item dimensions are 88 in D x 88 in W x 14in H. For more details please visit the product overview/Specifications section at HD.com after selecting the item. Once again, thank you for shopping with us. Please feel free to reach out for any additional questions. Jackie HD.com
It is 88" sq.