宀+0 = 3 

宀ㄇㄧㄢˊmián

  1. 二一四部首之一。

英"roof" radical in Chinese characters (Kangxi radical 40)​, occurring in 家, 定, 安 etc, see also 寶蓋[bao3 gai4]
法toit (radical)​
德Radikal Nr. 40 = Dach