Singapore humidity typically hovers around 80%+, so untreated leather can grow mould without regular wiping and ventilation. Solid-wood or plywood frames outlast particleboard options when dealing with this constant dampness. Rubberwood is a common affordable hardwood that handles the climate well compared to cheaper materials. You'll want to avoid natural leather and solid timber near direct sun exposure to prevent cracking over time.
King bed frames measure around 182–183cm wide by 190cm long, fitting most master bedrooms in BTO flats. You'll need to leave roughly 60cm clearance on the exit side for comfortable movement. The real limit often comes from the HDB lift door opening at 90cm wide, so measure carefully before delivery. Standard doorways are slightly wider at 91.5cm, but you still need a 2–5cm buffer for safe passage.