Our CW series stackable cast iron counterweights are designed to economically facilitate the balancing of sash in weight and pulley windows. The 1/2" though-hole permits their use with either rope or chain. The square cross-section provides more weight per inch than conventional round weights, essential when dealing with heavier glazings or insulating glass. The 1 lb., 3 lb., and 5 lb. sizes permit flexibility and precision in attaining a proper balance. They are suitable for 1 3/4" or larger sash in either new construction or retro-fit. Individual sash weights may be ordered below for $3.75/lb. + shipping. Assorted sash weight orders of 100 lbs. or more are $3.35/lb. including shipping to any postal address in the United States. Assorted sash weight orders of 500 lbs. or more are $2.99/lb. including shipping to any postal address in the United States. Call 215-247-0945 to order for quantity discounts. LIMITED QUANTITIES OF ANTIQUE SASH WEIGHTS AVAILABLE. CALL 215-247-0945 FOR AVAILABILITY OF ANTIQUE WEIGHTS. CW05 Sash Counterweight1 7/8" square stackable sash counterweight. Total Height: 8" Stacking Height: 7" 5 lb. cast iron. CW05$18.75 CW03 Sash Counterweight1 7/8" square stackable sash counterweight. Total Height: 5-1/4" Stacking Height: 4-1/4" 3 lb. cast iron. CW03$11.25 CW01 Sash Counterweight1 7/8" square stackable sash counterweight. Total Height: 2-1/2" Stacking Height: 1-1/2" 1 lb. cast iron. CW01$3.75