The previous two answers are exactly correct. In a normal sofa there is a foundation which can be sinuous wire, webbing or coil springs...
Insider’s Guide to
Sleeper Sofas
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Everything You Need to Know About Sleepers
Sleepers look very similar to sofas but are designed and constructed very differently.
These construction differences make sleepers significantly less durable over the long term than matching sofas made by the same manufacturer.
Most mechanisms used on sleepers sold in the U.S. are made by one of two huge suppliers. Expensive, high end sleepers often have the same mechanisms as those found in sleepers selling for half the price.
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All Your Sleeper Questions Answered
- How long should my sofa sleeper last?
- What sizes are sleepers available in?
- Can I use a regular mattress in my sleeper?
- How much do sleepers weigh?
- How wide does a doorway need to be for a sleeper to fit?
- Who invented the first sofa sleeper?
Insider’s Guides
Loveseat Posts
Have you ever slept comfortably on a sofa bed with a pull-out metal frame?
The quality of sleeper mattresses has dramatically improved over the past 15 years. Prior to that time most sleeper mattresses were...
Is it possible to put a normal mattress on a sofa bed?
No. First you have a height limitation. Many sleepers cannot take mattresses that are thicker than 5 inches. The more serious problem is...
Who invented the sofa-bed?
The modern pull-out sofa bed was invented by Bernard Castro. After emigrating to the U.S in 1919 from Sicily, Castro worked as an...
Furniture: Where can I find a nice white leather sectional sleeper sofa online for less than $3000?
Although it is possible to find white leather sectional sleeper sofas online for less than $3000, be prepared for a piece of furniture...
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