Build your bed on a supportive base with Canadian-made UltraFlex® solid wood box springs and mattress foundations. Compare 2-inch and 4-inch low-profile options, a 7-inch standard foundation and a 7-inch split foundation to find the right fit for your mattress and frame.
Choose your size, preferred foundation height and available upholstery colour. Check the selected product’s dimensions, frame support requirements and delivery coverage before ordering. Our foundations arrive assembled, and our team can help you compare a standard or split design for your space.
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Box spring foundation
Solid wood · Made in Canada
From $98.70 CAD
View options
Box spring foundation
Solid wood · Made in Canada
From $98.70 CAD
View options
Box spring foundation
Solid wood · Made in Canada
From $98.70 CAD
View options
Box spring foundation
Solid wood · Made in Canada
From $224.70 CAD
View optionsMatch the size, decide on your bed height and check access to the room.
Match the foundation to your mattress dimensions. Check that the bed frame supports the foundation correctly, including any required centre support.
Compare 2-inch, 4-inch and 7-inch options. Add the frame, foundation and mattress heights to estimate the finished height of your bed.
A split foundation comes in separate sections. Check each section’s dimensions against doorways, corners and stairwells, as well as the support beneath both sections.
Clear answers to help you compare your options.
The term box spring is often used for a mattress base. The UltraFlex® products in this collection are solid wood foundations with wooden slats or a slat cover panel and upholstered exteriors, as described on each product page. Check the actual construction rather than assuming the base contains metal springs.
Our current range includes 2-inch and 4-inch low-profile foundations, a 7-inch standard foundation and a 7-inch split foundation. Choose a height that works with your mattress, frame and preferred finished bed height.
The standard 2-, 4- and 7-inch listings offer Twin, Double, Queen and King options. The current 7-inch split listing offers Double, Queen and King. Check the selected variant and product dimensions before ordering.
A split foundation uses separate sections to support one mattress. It can make moving the base through tight access points more manageable. Measure each section and your delivery route before ordering; a split design does not guarantee that it will fit through every doorway or stairwell.
The current standard foundation descriptions specify two packages for King sizes. The separate split-foundation listing also specifies two packages. Review the exact listing and selected size, or ask our team to confirm the configuration before ordering.
The current product listings state that no assembly is required for the foundation itself. You still need an appropriate bed frame or support arrangement, and you should follow its installation instructions.
Check the frame’s internal dimensions, support layout and weight requirements. Make sure the foundation is supported evenly and that any required centre support is in place. Split sections must both be supported correctly. Contact us with your frame details if you need help checking compatibility.
No. Some platform and slatted bed frames are designed to support a mattress directly. Follow the requirements of your mattress and frame manufacturers. Adding a foundation changes the overall bed height, so check the complete setup before purchasing.
The current listings describe compatibility with UltraFlex® mattresses and list foam, latex, innerspring and hybrid mattress types. Match the size and check the support requirements for your specific mattress and frame. A rigid foundation is different from an adjustable base.
Yes. The products in this collection are described as made in Canada, with solid wood construction and upholstered exteriors. See the individual listing for its materials and construction details.
The current listings offer Black and White variants. Use the colour filter to compare matching options, then confirm your selected colour, size, price and availability on the product page.
These are foundation-only listings. A mattress is included only when you purchase a product explicitly described as a mattress-and-boxspring set. Explore mattress-and-boxspring sets and review the included items on the selected listing.
The current box spring listings offer free delivery in the GTHA area, with Niagara, Kitchener, Barrie and Oshawa also listed. This is different from the shipping coverage for mattresses. Contact us with your postal code to confirm box spring delivery coverage before ordering. Delivery is to the door; inside delivery and carrying items upstairs are not included. See our delivery information.
Read our refund and exchange policy before ordering. Contact the UltraFlex® team with your mattress size, frame details, preferred bed height and delivery postal code for help comparing foundations.
Explore solid wood foundations made in Canada, with low-profile, standard and split options.
Explore mattresses and bedding accessories in one place, with product details to help you check the fit.
Contact us for help checking fit, product information and current availability.
