The fourth type of window, the hengpi, is very common. It is a horizontal window placed above the lintel and its main use is ventilation as only a little light can pass through it.
橫披是另一類常見的窗，是指門楣以上的窗，位置很高，它的主要目的是通風，只能採部份的光，窗櫺圖案通常做的比較細密，以防止鳥雀或蝙蝠誤入室內。