Scanstrut WD-RAD-01 Base Wedge 4 The Scanstrut Base Wedge strengthens your Open Array's performance. The wedge is constructed of a tough, marine grade, UV stable wedge that slants the Open Array down 4 below horizontal to supply a level of horizon for your radar when boat is underway. Product Features: Strengthens Open Array's performance; Tough Marine Grade ; UV Stable Wedge; Compatibility: Garmin; Fantom 18; Fantom 24; GMR18HD / 18xHD / 18HD+; GMR24HD / 24xHD; GMR40; Humminbird; AS 21RD4KW; HB 2124 CHIRP; Lowrance; HALO20; HALO20+; HALO24; LRA-1800 / RB714A / DX42; LRA-2400 HD; Raymarine; QUANTUM; QUANTUM 2; RD218; RD418/RD418HD; RD424/RD424HD; Simrad; DX45; DX60 / DX64-S; GB40 / NX40/45 / NSE8/12; GB40 / NX40/45 / NSE8/12 / RB712A / DX42S; GB40 / NX40/45 / NSE8/12 DX64S; HALO20; HALO20+; HALO24; *This Base Wedge is for Open Array's which is also compatible with some units from Sitex. Click here for Scanstrut WD-RAD-01 Installation Instructions