3 or 4 foot lengths of weatherstrip. Available special order in other lengths. Commonly used on double hung windows. Narrow width allows installation without interfering with pulley and weight system. 1/2 inch width also available for thinner windows. Can be inserted without removing sash. Fasten with coppered nails. 123B x 36"Regular price: $7.25Sale price: $7.25, 2/$9.50, 4/$14.00, 8/$23.00, 16/$41.00, 50/$90.00 . 123B x 48"Regular price: $8.12Sale price: $8.12, 2/$11.12, 4/$17.12, 8/$29.12, 16/$53.12, 50/$120.00 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