 A curtain sack , commonly found on beds of the period , hangs in the central axis between Gabriel and the attendant angel . A sideboard beside the bed contains two types of candles and a flask of water standing in bright light falling from the window to the left . The floor is multi @-@ colored tile @-@ work , similar to van der Weyden 's Columba altarpiece ; Memling truncates the ceiling rafters in the mid @-@ ground , at the end of the bed , with the floor extending into the foreground . Blum describes the effect as acting " like an open stage for the holy figures " . 
