Styrofoam Insulation – 3 each 4” x 4’ x 8’ NOS (new old stock). These are left over from our under slab install. $100 for all 3 pieces. John & Kathy, North Courtenay (Merville), near Kitty Coleman Park/Woodland Gardens. Home tel: (250) 871-6212; cell/text: (250) 650-2273