https://tools.woot.com/offers/3m-ou...kit?cjdata=MXxOfDB8WXww&ref=w_cnt_sc_is_1_tl& 3M Outdoor Patio Door Clear Insulation Kit (7' x 9.3') on sale for $9.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is $6 per order.