NM Mattresses Split Queen Box Springs Black Mattresses All

NM mattresses are National Mattress's own line — quality construction at honest, direct prices across firmness levels and builds. Compare every option below by feel, size, and price.
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 black or dark-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). Looking for the Beautyrest® Black® collection? That's a premium brand line, not a colour — browse it on the Beautyrest Black page. Every mattress includes a 365-night sleep trial and free delivery across Canada.
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  • NM Boxspring - High Profile 7"
    BEST IN CLASS TOP RATED TRENDING
    National Mattress high-profile 7-inch boxspring foundation, cream fabric top deck with solid black sides NM Boxspring - High Profile 7" brand icon
    • 7" Slatted Wood Foundation
    • Quilted Border
    • Corner Guards
    • Dark Fabric
    • Works with most Mattresses
    Single/Twin In stock for fast delivery $115
    Twin XL In stock for fast delivery $125
    Double/Full In stock for fast delivery $129
    Queen In stock for fast delivery $159
    Compare at $299
    Queen Split $210
    King $250
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 23
    Pickup available icon Only Pickup available to
  • National Mattress low-profile 5-inch boxspring foundation, beige fabric top deck with dark charcoal sides NM Boxspring - Low Profile 5" brand icon
    • 5" Slatted Wood Foundation
    • Quilted Border
    • Corner Guards
    • Dark Fabric
    • Works with most Mattresses
    Single/Twin In stock for fast delivery $115
    Twin XL In stock for fast delivery $125
    Double/Full In stock for fast delivery $129
    Queen In stock for fast delivery $159
    Compare at $299
    Queen Split $210
    King In stock for fast delivery $250
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 23
    Pickup available icon Only Pickup available to
  • National Mattress high-profile 7-inch boxspring foundation, cream fabric top deck with solid black sides NM Boxspring - Black - High Profile 7" - Queen Split brand icon
    • 7" Slatted Wood Foundation
    • Quilted Border
    • Corner Guards
    • Dark Fabric
    • Works with most Mattresses
    Queen Split $210
    Compare at $399
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jul 7
  • National Mattress low-profile 5-inch boxspring foundation, beige fabric top deck with dark charcoal sides NM Boxspring - Black - Low Profile 5" - Queen Split brand icon
    • 5" Slatted Wood Foundation
    • Quilted Border
    • Corner Guards
    • Dark Fabric
    • Works with most Mattresses
    Queen Split $210
    Compare at $399
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jul 7

4 Items

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