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This mattress size guide shows exact dimensions of Twin, Twin XL, Full, Queen, King, and California King mattresses, making mattress shopping easy.
For adjustable Queen size beds where each half moves independently. Half California King or Split California King 36 × 83.5 91 × 212 For adjustable California King size beds where each half moves independently. Short Queen or RV Queen 60 × 75 152 × 191 Typically found in recreational vehicles and campers Short King or RV King 72 × 75
A mattress topper is a thin mattress, usually 5–10 centimetres (2–4 in) thick. [citation needed] Stand-alone mattresses of this size exist (see futon and Bed base#Floor beds; traditional European beds were made of a stack of mattresses of this size).
Another factor is the weight of a waterbed. Waterbed mattresses, depending on the size, hold about 80–235 US gal (300–890 L) of water, which could bring the weight of the entire bed to over 2,000 lb (910 kg). This weight could pose a risk to the floor the bed is on.
In less wealthy houses, the bed would be made of three planks and a mattress made of dried heather or fern, they would sleep with a single sheet and an old blanket. [19] In the 15th century beds became very large, reaching 7 to 8 feet (2.1 to 2.4 m) by 6 to 7 feet (1.8 to 2.1 m). The mattresses were often filled with pea-shucks, straw, or feathers.
Memory foam used in mattresses is commonly manufactured in densities ranging from less than 24kg/m 3 (1.5 lb/ft 3) to 128kg/m 3 (8 lb/ft 3) density. Most standard memory foam has a density of 16–80 kg/m 3 (1 to 5 lb/ft 3). Most bedding, such as topper pads and comfort layers in mattresses, has a density of 48–72 kg/m 3 (3 to 4.5 lb/ft 3).