3 or 4 foot lengths of weatherstrip. Available special order in other lengths. Commonly used on double hung windows. 1/2" width allows weatherstrip to avoid pulley and weight system. Can be inserted without removing sash. Fasten with coppered nails. 122B x 36"Regular price: $8.14Sale price: $8.14, 2/$11.32, 4/$17.68, 8/$30.40, 16/$55.84, 50/$127.00 . 122B x 48"Regular price: $9.20Sale price: $9.20, 2/$13.44, 4/$21.92, 8/$38.88, 16/$72.80, 50/$169.50 Coppered Nails 3/4" x 17Copper plated steel nails suitable for weatherstripping. Traditionally used with spring bronze weatherstrip. 1-1/2 oz. package. Contains about 150 nails. If you nail every 1-1/2" this will fasten 18 feet 9 inches of weatherstrip. If you nail every 2" this will fasten 25 feet of weatherstrip. If you nail every 1.6" 5 packages will fasten 100 feet. 51758$1.19, 5/$4.50