The stuff of movies. I have not seen this in any Singaporean house before, but I think the concept is really cool. Too bad I couldn't find any Singaporean dealers.
From Hidden Passage way .com these ideas are a neat way to add that bit of fun and lore into your homes.
Imagine a way to use that space below the staircase.
Or a means to hide off the door to your store room
Or even the door to your secret home work space. I just love how it really uses up the space and blends in with the surroundings.
More than meets the eye. Do visit them and take a look at the different types of doorways available. You will be surprised! =3