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Boxspring Premium Queen Split Adjustable Bed Compatible Mattresses Marshall® Handcrafted Luxury Mattresses

Premium is the sweet spot between everyday value and luxury — name-brand mattresses with better materials, thicker comfort layers and more advanced support, without the flagship price tag. This is where you'll find recognizable comfort lines like Sealy Posturepedic Plus, Serta Perfect Sleeper and Perfect Day, Beautyrest Harmony, Chirofoam memory foam and Springwall Chiropractic — in euro-top, pillow-top, hybrid, memory foam and even organic latex builds, across every firmness from plush to extra firm. Most premium mattresses run from about $400 to $1,400. Every one includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • What "premium" means: name-brand comfort and upgraded materials — a step up from value, below the luxury flagships • Featured lines: Sealy Posturepedic Plus, Serta Perfect Sleeper & Perfect Day, Beautyrest Harmony, Chirofoam, Springwall Chiropractic • Builds: euro-top, pillow-top, hybrid, memory foam and organic latex • Every firmness from plush to extra firm • Typically about $400 to $1,400 • Looking higher or lower? See our luxury or great-value mattresses • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
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
Not every mattress can bend with an adjustable base — but these can. Every mattress here is built to flex with the head and foot articulation of an adjustable base without damaging the comfort layers, so you can read, relax in Zero-Gravity or elevate your legs with confidence. In fact, over 90% of our mattresses are adjustable-compatible, spanning memory foam, hybrid and pocket-coil constructions from every brand — NM, Sealy, Serta, Beautyrest, Tempur-Pedic, Stearns & Foster and more — at every budget from about $109 to premium. Foam and hybrid models flex most easily, while rigid, thick tight-top innersprings generally don't. Pair any of these with one of our adjustable bases, and every mattress comes with a 365-night sleep trial and free delivery across Canada. • What this means: mattresses built to flex with an adjustable base's head & foot articulation • Over 90% of our mattresses are adjustable-compatible — every brand, every budget ($109+) • Best constructions for adjustable bases: memory foam, hybrid and pocket-coil • What usually won't work: rigid, thick tight-top innersprings that don't bend • Pairs with our adjustable bases (including split-king for independent sides) • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery

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.

Boxspring Premium Queen Split Adjustable Bed Compatible Mattresses Marshall
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How to Choose a Marshall Mattress

A Marshall mattress is a pocket coil bed, so the pocket coil is the part worth understanding before you start comparing feels. Each spring of heat-tempered drawn spring steel sits in its own fabric pocket, so it compresses only under the weight directly above it. The surface then follows the shape of your body, deeper beneath the hip and shoulder and shallower beneath the waist, rather than forming one broad hammock the way a connected coil unit can. Two things follow. Support is local, so the spine holds a straighter line, and movement is local, so a partner turning over does not travel across the bed.

Firmness on a pocket coil bed comes from two places: the spring unit itself, and the comfort layers above it. That is why a plush model and a firm one can share a support core and still feel nothing alike. Match the comfort layer to your position first. Side sleepers need enough give at the shoulder and hip to keep the spine level, usually medium or plush; back sleepers and stomach sleepers need the pelvis held near the surface, usually firm. Then account for weight, since a heavier sleeper compresses foam and springs further and often needs a step firmer than the label suggests. Kiln-dried wood belongs to the foundation side of the equation: lower moisture content means a frame that stays dimensionally stable under load.

Pocket Coil Support

Individually wrapped steel springs respond only where weight is applied, so the surface contours to your body instead of flattening it. See more pocket coil mattresses.

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Motion Isolation

Because the springs are not wired together, movement stays where it happens. That makes pocket coil a first choice for couples and for anyone woken by a partner turning over.

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Kiln-Dried Wood

Kiln drying lowers the moisture content of the lumber, so the wood stays stable and resists warping under years of load, which matters in the frame that carries the spring unit.

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Plush, Medium or Firm

One support core can wear very different comfort layers, so ask about feel and construction separately. Plush, medium and firm are choices to fit a body, not quality grades.

Frequently Asked Questions About Marshall Mattresses

What is a pocket coil mattress?
A pocket coil mattress carries its support in individual steel springs, each sewn into its own fabric pocket. Because the springs are not linked to one another, one can compress while its neighbour stays put, so the surface contours to your body point by point. The two practical benefits are closer support along the spine and far less motion transfer than a bed built on one connected spring unit.
Is a pocket coil better than a connected coil mattress?
On contouring and motion isolation, yes for most sleepers. A connected coil unit moves as a sheet, so weight in one spot lifts or drops the area around it and a partner's movement travels. Pocket coils act independently. Connected coil beds are simpler and tend to feel firmer, so they still suit shoppers who want a flat, very supportive surface. Compare the two constructions directly.
Does coil count matter in a pocket coil mattress?
Less than most shoppers expect. Past a reasonable threshold, adding more springs of the same gauge changes the feel very little, and figures are not comparable between makers because coil diameter, wire gauge and the number of turns all differ. Wire gauge and the quality of the tempering matter more, as does what sits above the springs.
What firmness should I choose for my sleeping position?
Side sleepers usually want medium or plush, because the shoulder and hip have to sink far enough for the spine to stay level. Back sleepers usually want firm to medium, holding the pelvis near the surface so the lumbar curve stays supported. Stomach sleepers usually want firm, since any sag through the middle extends the lower back. Heavier sleepers should try a step firmer than the guideline.
What should I compare when shopping for a pocket coil mattress?
Four things: the spring unit, including wire gauge, tempering and whether the perimeter is reinforced for edge support; the comfort layers above it; the cover and quilting; and how the whole thing feels after a full ten minutes lying in your usual position. Bring your own pillow if you can. Firmness labels are a starting point, not a standard, and they differ between makers.
How long should a pocket coil mattress last, and how do I care for it?
Plan to reassess a quality mattress somewhere around the eight to ten year mark. The springs usually outlast the comfort layers, so what you notice first is softening on top rather than lost support underneath. Rotate the mattress head to foot two or three times a year, use a mattress protector, and give it a sound base, because a sagging foundation ages a good spring unit quickly.

Want Help Comparing Pocket Coil Feels?

Our non-commissioned sleep experts can walk you through firmness, comfort layers and what a pocket coil actually does under your body.

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