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Stearns & Foster XL Twin/King Foundation Enhances Mattress Life and Your Sleeping Comfort A solid, satisfying sleep routine can be yours with the Stearns & Foster extra long twin bed foundation . Built to ensure a sound sleep and prolong the functional life of your mattress, the XL twin foundation turns your sleep zone into an island of steady rest and relaxation.

This foundation goes under your Stearns and Foster mattress of choice to deliver springy support and long mattress life while preventing your mattress from swaying and sagging. The tough innerspring construction of this foundation works with your mattress to ensure that the motion of one restless sleeper won’t wake the other.

Built with a sturdy interior construction that provides a level sleeping surface across the bottom of the mattress, this box spring reinforces the comfort, springiness and functional life of you sleeping setup. The extra length of this foundation means that two put together will accommodate one king size mattress, while a single foundation is the perfect size for a child to grow into. And with the time-tested Stearns and Foster warranty, this foundation is the perfect sleepware investment that will last for years to come.

  • The extra long twin bed foundation from Stearns & Foster supports and extends the comfort life of your mattress
  • Foundation size: Twin
  • Mattress Size: Twin
  • Foundation Height: 9 in.
  • The S&F foundation is designed to provide a solid foundation so your mattress doesn't sag and lasts longer, giving you the best sleep possible night after night
  • Dramatic vertical stitch and metal corner guards
  • For the complete set you must order 1 of this item PLUS 1 Twin Extra Long Mattress 37101, 37107, 37113, 37119, 37125, 37131, 37137, 37143, 37149, 37155, or 37161. OR 2 of this item PLUS 1 King Mattress 37104, 37110, 37116, 37122, 37128, 37134, 37140, 37146, 37152, 37158, 37164, 37167, 37171, 37175, 37179, 37183, 37187, 37191, 37199, 37203, 37206, 37209, 37212, 37215, 37218, 37221, or 37224


Foundation Color White
Width (in.) 38
Foundation Length (in.) 79.5
Foundation Height (in.) 9
Size Twin
Product Overview:
Foundation Type Box Spring
Foundation Weight (lbs.) 35
Warranties & Coverage:
General Warranty 25 year warranty (10 year non-prorated / 15 year prorated)

Product Documentation

Owner's Manual - English (Warranty)

Energy Star Logo   Energy Guide Logo

Manufacturer's Warranty
1 year parts and labor
SearsOutlet Certified
Find Out More »


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