Marshall® Split Queen Box Springs Grey Mattresses All

Marshall® is a Canadian name in handcrafted, pocketed-coil sleep. Each Marshall mattress is built in Canada on an 842 tempered pocketed-coil system with high-density encased edge support, spanning the Crafted and Assured series in medium, firm and plush feels, plus matching boxsprings to complete your set. Backed by a 10-year warranty and free next-day delivery in Toronto.
A split queen box spring is a standard queen foundation built in two halves (each about 30″ × 80″) instead of one solid piece — so it slides up narrow staircases, around tight corners, and into condos and lofts where a one-piece queen box spring simply won't fit. Together the two halves support a standard queen mattress (60″ × 80″) exactly like a regular box spring. Shop split queen box springs and foundations matched to Sealy, Serta, Beautyrest, Simmons, Stearns & Foster and more — free delivery across Canada. • What it is: a queen box spring that splits into two ~30″ × 80″ halves • Why: fits up tight stairwells and into condos/lofts a one-piece can't • Supports a standard queen mattress (60″ × 80″) — same support as a solid box spring • Split box springs and foundations (plus compatible bed frames) • Brands: Sealy, Serta, Beautyrest, Simmons, Stearns & Foster, Springwall, Galaxy & NM • From $162 — free Canada-wide delivery
These mattresses feature a grey or neutral-tone cover — and since that cover sits under your sheets, colour won't change how you sleep. To find the right bed, shop by size (twin to king), comfort (plush, medium, firm), or type (memory foam, hybrid, pocket coil). Every mattress includes a 365-night sleep trial and free delivery across Canada.

Loading recommendations...

MARSHALL® Boxspring - High Profile 9"
LIMITED STOCK NEW ARRIVAL
Kiln-Dried Wood Foundation
Classic 9″ High Profile
Pairs With Any Mattress
OEKO-TEX® Certified Cover
FSC-Certified Wood
10 Year Warranty
Made In Canada
Queen Split $865
Compare at $1,399
Backorder Available
On Display:
Estimated free delivery to M5H 2N1 on Tue, Sep 8
View Details
MARSHALL® Boxspring - Low Profile 6"
LIMITED STOCK NEW ARRIVAL
Kiln-Dried Wood Foundation
Low 6″ Profile
Full-Frame Support
Pairs With Any Mattress
OEKO-TEX® Certified Cover
10 Year Warranty
Made In Canada
Queen Split $865
Compare at $1,399
Backorder Available
On Display:
Estimated free delivery to M5H 2N1 on Tue, Sep 8
View Details
MARSHALL® Boxspring - Posture Board 2"
LIMITED STOCK NEW ARRIVAL
Kiln-Dried Wood Platform
Slim 2″ Profile
For Platform & Slatted Beds
OEKO-TEX® Certified Cover
FSC-Certified Wood
10 Year Warranty
Made In Canada
Queen Split $865
Compare at $1,399
Backorder Available
On Display:
Estimated free delivery to M5H 2N1 on Tue, Sep 8
View Details

Upgrade your sleep at National Mattress

Discover a mattress that transforms your sleep into a truly rejuvenating experience. We offer a wide variety of options to suit every sleep style and preference, ensuring a better night's sleep.

Why Choose Us?

Variety: From plush to firm, we have options for every body type and sleep style.
Quality: Trusted brands and top-notch materials for long-lasting comfort.
Sleep Trials & Warranties: Enjoy peace of mind with flexible trials and warranties.
Expert Advice: Get personalized recommendations from our sleep specialists.

Mattress Selection Includes

Memory Foam: Contours to your body for personalized comfort and pressure relief.
Hybrid: Combines responsive springs with foam for balanced support and comfort.
Innerspring: Provides firm support, bounce, and cooling airflow.
Latex: Hypoallergenic, eco-friendly, and exceptionally comfortable.
Adjustable Beds: Customize your sleep position for optimal comfort.

Mattress Selector

See which mattress is best for you!

Try Now

Thousands in Stock

We have over 1,000 mattresses in stock.

Shop Now