Home Slickdeals 3M Indoor Window Insulator Kit – Patio Door $4.48 + Free Store... Slickdeals 3M Indoor Window Insulator Kit – Patio Door $4.48 + Free Store Pickup By ARCOM - 18 October 2017 235 0 SHARE Facebook Twitter Go to the deal page: 3M Indoor Window Insulator Kit – Patio Door $4.48 + Free Store Pickup