XL Adjustable Desk Riser lets you go from sitting to standing in seconds. It rises to 20" and lowers to 5" to optimize the ergonomic work position for people of all heights. Straight up-and-down motion minimizes the required desk or credenza depth to 23". Desk riser offers plenty of room to work with a full desk size. The 25-1/2" x 11-1/2" keyboard tray retracts and pulls out for convenient access. Desk riser includes grommet hole for mounting monitor arm or running cables. It holds up to three monitors, a laptop and more with a 45 lb. capacity. Desk riser works with optional Deluxe Floor Stand (sold separately) to create a complete sit-to-stand desk or an extension to your current desk.