Increasing the large Cooling column allows for better heat dissipation. Increase the power cooling column to bring better heat dissipation to for your 3B/3B+. No longer worry about overheating. There is no need to install a fan. It also provides perfect heat dissipation. , hard, long-lasting rust-free, wear-, and can be well protected to for your 3B/3B+. All ports and slots of the case can fit perfectly with for 3B/3B+ Compatible With: For 3B/3B+ Colour: black Material: aluminum alloy Size: 88 x 63 x 35MM Package Contents: 1 x Shell 1 x screw set 4 x Thermal tapes Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.