Insulated box

An insulated box assembly comprising:

• an insulated box comprising:
• a box comprising:
• a bottom panel;
• a first side panel;
• a second side panel, the first side panel and the second side panel attached to the bottom panel, the box defining a box opening of a box cavity disposed opposite from the bottom panel;
• a first shoulder disposed proximate the box opening and extending inward into the box cavity from the first side panel;
• a second shoulder disposed proximate the box opening and extending inward into the box cavity from the second side panel;
• a first insulated panel attached to the first side panel, the first insulated panel comprising an insulation batt and a sheet, the insulation batt enclosed between the first side panel and the sheet;
• a second insulated panel attached to the second side panel and attached to the bottom panel opposite from the first side panel;
• and
• a box top panel enclosing the box cavity at a top end of the box;
• the box top panel resting upon the first shoulder and the second shoulder;
• and
• an insulated cavity panel, the insulated cavity panel attached to the side panel and disposed within the box cavity, the insulated cavity panel comprising a cavity sheet and a cavity insulation batt, the cavity sheet encapsulating the cavity insulation batt.