Improve the organization and appearance of your rack in seconds with a tool-less blanking panel - Compatible with 19in 2-post and 4-post server racks - Easy installation with tool-less design - 1U panel / Server Rack Filler Panel / Panel for server racks / Server Rack Access Panel - 1U solid rack panel - Improve the airflow in your server rack with a solid panel that helps guide the airflow along the back of your rack, instead of passing through your equipment.