Features: Complete Stackable Clear Acrylic Case Kit for Up To Four Layers Compatible With Current Raspberry Pi's including Pi 4 B, 3 Band, Pi 3 B, Pi 2 B, Pi Band Our iUniker Raspberry Pi Case is open on all sides with each acrylic layer containing a built in air vent to allow for maximum air flow for each Raspberry Pi With Quiet Cooling Fan, it can drop the temps for your Pi Include Raspberry Pi Heatsink, Better Cooling Experience Package Include: 1x 4-Layer Raspberry Pi Case 4x Cooling Fan 4x Raspberry Pi Heatsink Kit 4x Screw Set Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store