The Dometic RV Awning Arm Extension Hardware is a set of awning arms designed to hold the fabric roller tube assembly. The arms allow you to extend, retract, and secure the roller tube assembly.• Height Range: 76" to 86"• Main Arm Length: 73"• Adjustable Arm Length: 57"• Compatible with Dometic 803, 848, 858, and 839 Awnings• For straight side vehicles Compatible with Dometic 803, 848, 858, & 839 Awnings For tall, straight-side vehicles | Dometic RV Awning Arm Extension Hardware, Tall, White