Product Features and Technical DetailsSuttle 900LC4-50BS Single Line DSL Phone FilterThe Suttle 900LC4-50BS (1-Line) DSL Filterconnects between the wall jack and voice device (e.g. phone, fax,answering machine, Caller ID) providing a single filtered jack for asingle line of voice device communications.Suttle In-line DSL filters eliminate all erratic impedance from telephone equipment that interfere with DSL communications.Suttle 900LC4-50BS (1-Line) DSL Filter Features:- Small compact design- Simple to install- Material is flame retardant thermoplastic compliant with UL 94V-0- Filter topology: 2-pole low pass- Contacts - Plug and Jacks - Minimum 50 micro-inch of gold and nickel- FCC Registered; Complies with Part 68; ANSI T1. 421- Dimensions: 3.8" L x .75" H x 1.25" W- Color: IVORY