Night Therapy 4" Low-Profile BiFold Box Spring (Assorted Sizes) 

by Night Therapy | Item  #: 879427 | Model #:  NT-BIFD-4T |
Night Therapy 4
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  • $ 79 00 - $ 154 00
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  • Twin - out Of stock
  • Full - out Of stock
  • Queen - out Of stock
  • King
  • Cal King - out Of stock
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About this item

  • Low-profile box spring is only 4" high
  • Innovative folding mattress foundation
  • Designed for mobility and functionality
  • Fits through tight places unlinke traditional box springs
  • Shippable via Fedex or UPS to your home


The 4" Low-Profile Bi-Fold Box Spring by Zinus is an innovative folding mattress foundation designed for mobility and functionality. Traditional box springs are hard to maneuver through your home, especially upstairs and through doorways, but the Night Therapy Bi-Fold Box Spring easily fits through tight places. Tougher than it looks, this box spring offers the look and functionality of a traditional box spring but is made from heavy-gauge steel for longer-lasting durability.


  • Folding mattress foundation compresses for easy mobility and storage
  • Designed to have the look of a traditional box spring
  • Constructed with a heavy-gauge steel frame and fabric cover
  • No assembly required, simply open the box, slide the foundation out and unfold; it will immediately open to the shape of a box spring
  • 4" height is perfect for higher profile mattresses

Manufacturer Info


Assembled Country


Assembled Size

Twin: 74" L x 38" W
Full: 74" L x 53" W
Queen: 79" L x 59.5" W
King: 79" L x 75.5" W
California King: 83" L x 71.5" W

Component Country




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Shipping Information

Standard - 2 to 6 business days

Delivery not available to AK, HI or Puerto Rico

Warranty Information

5-year limited warranty

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