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Mattress Safe, Inc.

Stretch Knit Box Spring Encasement


Stretch Knit Box Spring Encasement

3977.5-SKZ 7

Product Description


Mattress Safe® Stretch Knit Box Spring Encasement with the patented “Zipper with the Hook”®. A sewn in loop and zip-tie is included to ensure tamperproof encasements. Color encasements are made at the time of order. Please allow 10 – 15 days for production.

Do You Have A "Split" Box Spring?

Before ordering your box spring encasement, make sure your mattress has a single or a "split" box spring set. If you have a King or Queen mattress, use the table below to order the proper box spring encasement for your box spring configuration.

Mattress SizeBox Spring
Order This Box Spring Encasement
Queen ( 60"x80" ) Split Order 2 Split Queen Box Encasements
Queen ( 60"x80" ) Single Order 1 Queen Encasements
King ( 78"x80" ) Split Order 2 Twin Plus+ Encasements
King ( 78"x80" ) Single Order 1 King Encasements
California King ( 72"x84" ) Split Order 2 Cal Twin Plus+ Encasements
California King ( 72"x84" ) Single Order 1 King Plus+ Encasement
Hotel King ( 72"x80" ) Single Order 1 King Plus+ Encasement

King Box Spring

Single Box Spring

King Split Box Spring

Split Box Spring Set

Plus+ Advantage

Plus+ Advantage® Sizes

Plus+ Advantage® sizes stretch to fit a variety of mattress depths and lengths, including regular and long sizes. Plus+ Advantage® brings you the versatile answer to mattress and box spring protection.

  • The Twin Plus+ Mattress Encasement stretches to fit Twin and Long Twin. 
  • The Full Plus+ Mattress Encasement stretches to fit Full and Long Full. 
  • The King Plus+ Mattress Encasement stretches to fit California King and Hotel King. 

Learn More About the Plus+ Advantage

How to measure your mattress

How To Measure Your Mattress Correctly

It is important to properly measure your mattress and box spring frame before purchasing an encasement. Due to hygiene and bed bug concerns, we are unable to accept exchanges and returns on opened or used products. For more information, please review our return policy.

Learn How To Measure Your Mattress


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