3038A. The Videx 3038 kit is used to allow all full base 3000 series audiphones to be desk mounted. It consists of an angled metal base, a 1.5 metre flexible cable and a junction box.. Suitable for desk mounting all full base 3000 series audiophones. White powder coated metal base. Base Plate Dimensions: 77mm (W) x 210mm (L). Junction Box Dimensions: 110mm (L) x 70mm (W) x 30mm (D)