(6 Pack) 3.5 X 2.5 Self Adhesive Home Business 24 Hour Protection by Security System Window Door Warning Alert Sticker Decals. For indoor / outdoor use 6 Pack Self-adhesive 24 Hour Protection Warning stickers / decals. Simply remove the decals from the wax paper and stick on windows and doors to scare away burglars. Measures 3.5 X 2.5 inches. Pack of 6 Stickers. Perfect for outdoor and indoor use. Made in the USA - Free shipping!