C.R. LAURENCE FJ2920 CRL 29" Tubular Spiral Non-Tilt Window Balance Red Bushing Non-Tilt Window Type with Industry Standard 9/16&quot; (14 mm) Tube Diameter Red Bushing Indicates Sash Load Weights of Up to 25 Pounds (11.3 Kg) Will Replace Either Metal or Plastic Tube Balances