Bed Frame King Mattress Accessories Mattress Accessories

Everything for a king bed (76″ × 80″) in one place. Shop king mattress protectors, sheet sets, box springs, bed frames, pillows and duvets — note that a king box spring is built as two split halves (each 38″ × 80″) so it's easy to move and fits up tight stairwells. Protectors from HealthGuard and Hush, box springs matched to your mattress brand, plus premium bedding, all with free delivery across Canada. • Fits the king mattress: 76″ × 80″ • Mattress protectors — waterproof, breathable and encasement styles • Sheet sets, duvets and pillows in king sizes • Box springs and foundations (a king ships as two split halves) • Bed frames and bases • Brands: HealthGuard, Restguard, Hush, NM, Leggett & Platt, Sealy, Serta, Beautyrest, Tempur-Pedic & more • Accessories from $13 — free Canada-wide delivery

Complete your sleep setup with pillows, toppers, protectors, and more. These mattress accessories enhance comfort and extend mattress life.

Bed Frame King Mattress Accessories Accessories
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  • Inst-A-Matic® Premium Series Bed Frame - King
    LIMITED STOCK
    Leggett & Platt Inst-A-Matic steel bed frame, black rails with centre beam, headboard brackets, glide feet Inst-A-Matic® Premium Series Bed Frame - King brand icon
    • Made of hardened steel for longevity, strength, and durability
    • 4 Reinforced legs
    • 2 Center support legs
    • 6 Plastic glides in total
    • Fast assembly, no tools required.
    • Lifetime Limited Warranty
    • 1000 lbs Weight Capacity
    King In stock for fast delivery $150
    Compare at $299
    Online availability icon In-Stock Only 6 left!
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  • Bedder Base® Heavy Duty Platform Base - King
    TRENDING NEW ARRIVAL
    Bedder Base® Heavy Duty Platform Base - King Bedder Base® Heavy Duty Platform Base - King brand icon
    • All‑in‑One Support System
    • Tested 3000 lb Capacity
    • 14″ Profile, 13″ Clearance
    • Powder‑Coated Steel Frame
    • Tool‑Free Assembly
    King In stock for fast delivery $323
    Compare at $599
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  • SERTA® Pro Platform™ Base (Foundation-Platform-Frame) - King
    LIMITED STOCK
    Serta Pro Platform base, flat black upholstered deck with edge trim on cylindrical black legs SERTA® Pro Platform™ Base (Foundation-Platform-Frame) - King brand icon
    • Folding Flat Foundation
    • 12" Stackable Legs (3", 6", 9", 12" Adjustable height)
    • Fabric Cover
    • Ships in Compact Box, Easy No Tools Assembly
    • 2 Year Warranty
    • 650 lbs Weight Capacity
    King $368
    Compare at $799
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery on Tue, Jul 14
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  • NM Platform Base - King
    LIMITED STOCK NEW ARRIVAL
    NM Platform Base - 1 NM Platform Base - King brand icon
    • No Box Spring Needed
    • Folding Plywood Platform
    • Height-Adjustable Steel Legs
    • Black Non-Skid Deck
    • 10-Year Warranty
    King $481
    Compare at $999
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tue, Jul 14
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  • NM Platform Bedframe - King
    FLASH SALE LIMITED STOCK
    National Mattress Willa platform bed frame, natural light wood slatted deck on tapered angled legs NM Platform Bedframe - King brand icon
    • Hardwood Platform Bed (12 Inch Height)
    • Hardwood Slats Less Than 2" Apart
    • Compatible with most headboards
    • Sleek Minimalist Design
    • 10 Year Warranty
    King In stock for fast delivery $524
    Compare at $1,099
    Online availability icon In-Stock Only 2 left!
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  • NM Platform Bedframe - Walnut - King
    FLASH SALE LIMITED STOCK
    National Mattress Willa platform bed frame, dark walnut rails and tapered legs with light wood slats NM Platform Bedframe - Walnut - King brand icon
    • Hardwood Platform Bed (12 Inch Height)
    • Hardwood Slats Less Than 2" Apart
    • Compatible with most headboards
    • Sleek Minimalist Design
    • 10 Year Warranty
    King In stock for fast delivery $524
    Compare at $1,099
    Online availability icon In-Stock Only 5 left!
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  • NM 1.0 Rise Lifestyle Adjustable Base - King
    NEW ARRIVAL
    NM 1.0 Rise Lifestyle Adjustable Base - 1 NM 1.0 Rise Lifestyle Adjustable Base - King brand icon
    • Head Articulation
    • Wired Remote
    • Foldable, Zero-Clearance Design
    • 750 lb Lift Capacity
    • 12″ Post Legs
    • Sync Cord Available (Split Sizes)
    • Headboard Bracket Available
    King In stock for fast delivery $775
    Compare at $1,599
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  • SERTA® baselogic™ BRONZE Adjustable Base - King
    FLASH SALE NEW ARRIVAL
    Serta baselogic Bronze adjustable bed base, black deck head sharply raised foot flat, cylindrical legs SERTA® baselogic™ BRONZE Adjustable Base - King brand icon
    • Head Articulation
    • Wired Remote
    • Slim Profile Design
    • 9” Solid Legs
    • Zero Clearance
    • Foldable
    King In stock for fast delivery $900
    Compare at $1,499
    Online availability icon In-Stock Only 9 left!
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  • NM 3.0 Advanced Lifestyle Adjustable Base - King
    LIMITED STOCK NEW ARRIVAL
    NM 3.0 Advanced Lifestyle Adjustable Base - 1 NM 3.0 Advanced Lifestyle Adjustable Base - King brand icon
    • Head & Foot Articulation
    • Wireless 5-Button Remote
    • 3-in-1 Adjustable Legs (6.5 / 10 / 13.5″)
    • Foldable & Safe-Locking Design
    • Battery-Powered Emergency Lowering
    • Tool-Free Assembly
    • Sync Wires Included (Twin XL)
    King In stock for fast delivery $940
    Compare at $1,999
    Online availability icon In-Stock Only 7 left!
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  • NM 5.0 Pro Lifestyle Adjustable Base - King
    NEW ARRIVAL
    NM 5.0 Pro Lifestyle Adjustable Base - 1 NM 5.0 Pro Lifestyle Adjustable Base - King brand icon
    • Head & Foot Articulation
    • Wireless 9-Button Remote with Flashlight
    • 3 Programmable Memory Positions
    • 3-in-1 Adjustable Legs (6.5 / 10 / 13.5″)
    • Slim 1″ Zero-Clearance Profile
    • Foldable Plywood-Deck Frame
    • Battery-Powered Emergency Lowering
    King In stock for fast delivery $1,026
    Compare at $2,099
    Online availability icon In-Stock Only 9 left!
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  • NM 7.0 Elite Lifestyle Adjustable Base - King
    NEW ARRIVAL
    NM 7.0 Elite Lifestyle Adjustable Base - 1 NM 7.0 Elite Lifestyle Adjustable Base - King brand icon
    • Head & Foot Articulation
    • Wireless 17-Button Remote
    • App Control (Apple & Android)
    • 4 Programmable Memory Positions
    • Zero-Gravity, Anti-Snore, TV & Lounge Presets
    • Head & Foot Massage with Timer
    • Dual USB Hubs (Type A & C)
    • LED Under-Bed Lighting
    • Child-Lock
    • Zero-Clearance Easy-Fit Frame
    • Battery Emergency Lowering
    • 850 lb Capacity
    King In stock for fast delivery $1,242
    Compare at $2,599
    Online availability icon In-Stock Only 9 left!
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  • SERTA® baselogic™ SILVER Adjustable Base - King
    BEST IN CLASS LIMITED STOCK NEW ARRIVAL
    Serta baselogic Silver adjustable bed base, grey upholstered deck head and foot raised on black metal legs SERTA® baselogic™ SILVER Adjustable Base - King brand icon
    • Head & Foot Articulation
    • Wireless Remote
    • One Touch Flat Preset Position
    • Zero-Gravity Preset Position
    • Slim Profile Design
    • 3-in-1 12” Adjustable Legs
    • Zero Clearance
    • Foldable
    King In stock for fast delivery $1,299
    Compare at $1,999
    Online availability icon In-Stock Only 2 left!
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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.
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