Amazon.com: iSmartView Universal 20ft 6 Meters Power Extension Cable, DC Plug 12V 24V Power Adapter Extension Cable, 2.1mm x 5.5mm Male to Female, 20AWG Cord for Surveillance Camera, Monitor, LED, Car More :
Snellen Letter Linear-spaced Distance Chart, 20ft (6 meters)
How much can I fit in a shipping container? - BSPC Removalists