The 1900-10 is designed for 10mm studs from either Schaefer slides or competitors systems. Fits flat battens up to 22mm wide and 10mm thick or round battens up to 16mm in diameter. Adjustment range of 1-1/2" (38mm). Overall size 5-3/4" x 3" (172 x 76mm) Includes backing plate. Injection molded high strength uv treated plastic.