Guardmax Zippered Box Spring Cover

Queen / White

Best for up to 10" deep box springs

$39.99

Price from our latest catalog update. Checkout, delivery and returns happen at our retail partner.

Fits up to 10" deepMeasure seam to seam first
Zipper with a closed endCovers all six sides
Price from our last updateThe partner checkout has the final price
Sold by our retail partnerDelivery and returns are theirs

What you get

Top: knit jersey.
Closure: zipper with a closed end.
Covers all six sides of the mattress or box spring.
Waterproof, as the maker states.

How to use it

Measure the mattress from the bottom seam to the top, pillow-top included.
Zip the cover shut all round, and close the end of the zipper the way the maker shows.
Leave it on: bed bugs zipped inside die there in time.
Check the cover for holes and tears when you change the sheets.
Pair it with interceptor cups: a cover does not stop a bug from climbing onto the bed.

Will it fit?

Sizes: Twin, Twin XL, Full, Full XL, Queen, King, California King. The maker cuts it for up to 10" deep box springs.

Find the cover for your bed size and depth.

Knit top box spring cover in seven sizes

Seven sizes run from Twin to California King, each cut for a base up to 10 inches deep, so you can match the cover to the foundation you already own. The zipper crosses one end and runs down both long sides, which lets the cover open wide and close again without pulling hard on the seams.

Under the soft knit face sits a sealed TPU membrane. The maker says it held back 10,000 millimeters of water pressure in testing, so a spill stays on top. Seams are sewn at 10 to 12 stitches per inch and back-locked at both ends, and a locking pull keeps your zipper from creeping open.

Guardmax Zippered Box Spring Cover is part of the Bed Bug Blocker selection, on the box spring encasements shelf.

Every Guardmax Zippered Box Spring Cover option we carry
Option	Fits depth	Price
Twin / White	10"	$34.99
Twin XL / White	10"	$33.99
Full / White	10"	$36.99
Full XL / White	10"	$36.99
Queen / White	10"	$39.99
King / Standard	10"	$39.99
California King / White	10"	$41.99

Side by side
Feature	Guardmax Zippered Box Spring Cover	Hospitology Sleep Defense Box Spring Encasement	SureGuard Box Spring Encasement	Hygea Natural Vinyl Box Spring Cover
Sizes	Twin, Twin XL, Full, Full XL, Queen, King, California King	Twin, Queen, Split King	Twin, Full, Full XL, Queen, California King	Twin, Full, Full XL, Queen, King
Fits depth	up to 10" deep	5-11" deep	8-11" deep	up to 9" deep
Top	knit jersey	knit jersey	knit jersey	vinyl
Closure	zipper with a closed end	zipper all round	zipper all round	zipper all round
All six sides	Yes	No	Yes	No
Waterproof	Yes	No	Yes	Yes
Maker says lab-tested	No	Yes	Yes	No
Rating	4.8 (622)	4.7 (11,026)	4.7 (5,635)	4.0 (346)
Price	from $33.99	from $30.00	from $47.97	from $26.99
Buy

How to use the Guardmax Zippered Box Spring Cover follows the EPA and the University of Kentucky: zip it shut, leave it on for a year, and stand the bed legs in cups.

This is general information about keeping bed bugs out of a bed, not pest control or medical advice. A licensed pest professional, your doctor and the maker's own instructions come first.

What the public sources say

U.S. EPA, "Do-it-yourself Bed Bug Control". Says to set interceptors under each leg of infested furniture, move it a few inches off the walls with no linens touching the floor, check and clean the interceptors every week, keep inspecting at least every 7 days, and use covers that seal mattresses and box springs so bed bugs inside die. Read October 30, 2026.
University of Kentucky Entomology, ENTFACT-636 "Bed Bugs". Says bed bugs zipped inside an encasement eventually die, that an encasement does not stop a bug from climbing onto the bed, that a trap under each leg with the bed pulled off the wall makes the bed an island, and that a dryer at medium-to-high heat for 10 to 20 minutes kills all life stages. Read October 30, 2026.

Each of these sources is linked in our guide on interceptor cups.

Questions

What Bed Bug Blocker shoppers ask about the Guardmax Zippered Box Spring Cover

Which sizes does the Guardmax Zippered Box Spring Cover come in?

Twin, Twin XL, Full, Full XL, Queen, King, California King, cut for up to 10" deep box springs. Pick a size above and the price of the Guardmax Zippered Box Spring Cover changes with it.

Does the Guardmax Zippered Box Spring Cover close all six sides?

Yes: the Guardmax Zippered Box Spring Cover zips around the whole box spring, bottom included, with a zipper with a closed end.

Can you wash the Guardmax Zippered Box Spring Cover?

Yes, the Guardmax Zippered Box Spring Cover goes in the washer by the care label Guardmax sews in. Its waterproof membrane wears out faster under high heat, so dry the Guardmax Zippered Box Spring Cover on medium or low.