This is a black matte aluminum Raspberry PI4B case with double fans.
PI4B-CASE-AL-BK - This is a BALCK ALUMINUM Raspberry PI4B case with superior heat dissipation.
PI4B-CASE-1F-CL - This is a transparent plastic ABS color Raspberry PI4B case, with fan.
PI4B-CASE-2F-BK - This is a textured black matte plastic ABS color Raspberry PI4B case with double fans.
PI4B-CASE-BK - This is a black matte plastic ABS color Raspberry PI4B case. With its textured ridges, it just feels good to look at and hold it in your hand.