C.R. LAURENCE FH2520 CRL 25" Tubular Spiral Tilt Window Balance Red Bushing C.R. Laurence Red Bushing Indicates Sash Load Weights of Up to 25 Pounds (11.3 kg) Tilt Window Type with Industry Standard 9/16&quot; (14 mm) Tube Diameter Will Replace Either Metal or Plastic Tube Balances