![Independent support for each sleeper, and fully adjustable for different body types]()
![The middle 6 pairs of suspension slats feature adjustable firmness for precise body alignment]()
![TEAM 7 riletto bed in beech heartwood w/ Berkeley Ergonomics Suspension Slats]()
![The optional European suspension slat foundation adds customizable support for each sleeper and is a highly-recommended addition to your Berkeley mattress.]()
![The optional European suspension slat foundation provides customizable support for each sleeper and is highly recommended as an addition to your Berkeley mattress.]()
![TEAM 7 lunetto bed in walnut w/ relief headboard. Berkeley Ergonomics suspension slats. Photographed in our Edmonton store]()
![TEAM 7 sesam bed in cherry w/ Berkeley Ergonomics Suspension Slats. Photograhed in our Calgary showroom]()
![This version of the Berkeley Ergonomics suspension slat is designed for installation in platform beds, for example, our metal-free TEAM 7 European beds]()
![The middle six pairs of slats feature adjustable firmness to fine-tune comfort and support for each individual sleeper]()
![All-wood slats for use in platform beds]()
Suspension Foundation
Adjustable Support & Firmness
Suspension Foundation - Twin XL (38 x 80") / 6 ½" | 16.5 cm - Standard is backordered and will ship as soon as it is back in stock.
Local Delivery or Pickup Only on all Berkeley Ergonomics
Local Delivery or Pickup Only on all Berkeley Ergonomics
Note: The Suspension Foundation is available for local delivery (Calgary & Edmonton areas) or for pickup at one of our stores or warehouses. Delivery outside of our local area is unavailable.
Couldn't load pickup availability
Standard Sizes | Custom Sizes | Uncommon Sizes | European Sizes
| Width x Length | |||
| Crib | 28 x 51" | 71.1 x 129.5 cm | |
| Half Queen | 30 x 79 ½" | 76.2 x 202 cm | |
| Twin/Single | 38 x 74 ½" | 96.5 x 189 cm | |
| Twin/Single Extra Long (XL) | 38 x 79 ½" | 96.5 x 202 cm | Also known as "Twin Long" |
| Double/Full | 53 x 74 ½" | 134.5 x 189 cm | Also known as "Standard" |
| Queen RV | 60 x 74 ½" | 152.5 x 189 cm |
RV mattresses are typically this size |
| Queen | 60 x 79 ½" | 152.5 x 202 cm | |
| King RV | 72 x 79 ½" | 183 x 202 cm | Gaining in popularity in RV's |
| California King (Western King)1 | 72 x 84" | 183 x 213 cm | |
| King (Eastern King) | 76 x 79 ½" | 193 x 202 cm | Standard Canadian & American King |
1 - Although California King is available in Canada, this size only represents a small portion of our king mattress sales.
Nearly all mattress sizes are rounded up. For example a Twin bed in real-world dimensions is usually 38 x 74" or a Double is 53 x 74". Queen and King are almost always 79 inches long. Most mattresses today are still primarily hand made, which will always lead to variances. Foam mattresses tend to adhere to sizing guidelines more accurately than spring mattresses.
Square, rectangle, round, cut corners to fit antique four poster beds, we're well-suited to work with our manufacturing partners to provide these unique requirements. Our handcrafted luxury natural mattress range from Berkeley Ergonomics, Harrison Spinks, and t•masc (made in Ottawa by Obasan) allows for just about any possibility.
Our custom mattress category is an excellent starting point for obtaining ideas and approximate pricing on special sized natural mattresses.
Our partner suppliers are able to craft a mattress in just about any of these uncommon mattress dimensions. Be sure to check out our custom mattress category as a starting point to source these sizes.
| Old Style Single2 | 36 x 72" | 91.4 x 182.9 cm |
| Twin/Single Waterbed | 36 x 82" | 91.4 x 208.3 cm |
| Half California King | 36 x 84" | 91.4 x 213.4 cm |
| Supersingle (3/4) | 47 x 74 ½" | 119.5 x 189 cm |
| Supersingle (3/4) Extra Long (XL) | 47 x 79 ½" | 119.5 x 202 cm |
| Supersingle Waterbed | 47 x 82" | 119.4 x 208.3 cm |
| Double/Full Extra Long (XL) | 53 x 79 ½" | 134.5 x 202 cm |
| Queen Waterbed | 58 x 82" | 147.3 x 208.3 cm |
| California Queen3 | 60 x 84" | 152.4 x 213.4 cm |
| King Waterbed | 70 x 82" | 177.8 x 208.3 cm |
| Alaskan King | 108 x 108" | 274.3 x 274.3 cm |
Note, sizing may vary dependent upon the manufacturer.
2 - 36 x 72" was a common size in the middle part of the 20th century. It is no longer a standard size.
3 - California Queen was used primarily as a replacement for wood-framed water beds and is nearly obsolete.
This table lists the European sizes we most frequently source for our customers here in Canada. Our TEAM 7 European Platform Beds are available in most of these sizes.
| Width x Length | ||
| EU - Single/Twin | 90 x 200 cm | |
| EU - Single Extra Long | 90 x 210 cm | |
| EU - Small Double | 120 x 200 cm | |
| EU - Double | 140 x 200 cm | |
| EU - King | 160 x 200 cm | |
| EU - Grand King | 180 x 200 cm | |
| NL - Extra-Large Double | 200 x 210 cm | TMASC King |
| UK - King | 152 x 198 cm | 60 x 78" |
| UK - Queen or Super King | 183 x 198 cm | 72 x 78" |
Visit our European & British Mattress & Bed Sizes page for more details.
About Discrepancies
It is normal for a particular mattress to not match up exactly to a size listed above. As many aspects of building a mattress are still done by hand, there will always be variations in sizing from one mattress to the next. Depending on the mattress manufacturer, deviations of 1" or more may still be considered as within the acceptable tolerance.
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On Display @ TMASC
Berkeley Ergonomics is on display in Calgary, Edmonton, and Sherwood Park
Suspension Foundation Specifications
- 100% organic cotton outer fabric (except for all-wood version)
- 100% Plein-Air French wool quilted to the inside of the outer fabric
- Plein-Air - These sheep live outdoors year-round
- Produces a more curly, longer fibre
- Superior to mechanically crimped wool, it does not mat down as easily
- Genuine German beechwood bowed slats
- Independent, flexible and supportive slats
- Slats are firmness-adjustable for optimal contour
- Individual sides - no roll-together or bounce
- Each side adjusts independently
- Fits any frame - replaces a box spring
- The boxspring replacement version is wrapped in certified organic cotton and certified organic French wool
- Meets all flame-retardant requirements without any synthetic treatments
- Free of harmful chemicals - no flame retardant, formaldehyde or PBDEs
- Made in California
- Beechwood slats are from Germany
- Rubber suspension components are from France
- All-wood foundation:
- The beechwood frame is from Germany
- Upholstered foundation:
- The perimeter frame is spruce wood from Canada
- Knit cotton upholstery fabric is loomed in Germany
- Wool filling sourced from France and processed in Belgium & Germany
- German cotton & French wool quilted and sewn in California
All About the Suspension Foundation
About Berkeley Ergonomics
About Berkeley Ergonomics
About TMASC
About TMASC
ClickTap to Close the Availability & Lead Times tab
ClickTap to Close the Availability & Lead Times tab
Calgary Edmonton Sherwood Park Usually available for immediate collection at our Alberta galleries or prompt nationwide dispatch.
Calgary Warehouse Edmonton Warehouse Regularly held at our regional distribution centres; we specialize in white-glove local delivery, immediate collection, and nationwide freight. Learn more about our furniture & mattress delivery.
Regularly Stocked Suspension Foundation Variants
Twin XL (38 x 80") / 6 ½" | 16.5 cm - Standard
Split Queen (2x Half Queen Side-by-Side) / 2 ⅜" | 6 cm - All-Wood for Platform Beds
Split King (2 Twin XL Side-by-Side) / 6 ½" | 16.5 cm - Standard
Split King (2 Twin XL Side-by-Side) / 2 ⅜" | 6 cm - All-Wood for Platform Beds
Queen (60 x 80") / 6 ½" | 16.5 cm - Standard
Suspension Foundation Lead Times
If a specific variant isn't listed as 'Regularly Stocked,' it is made to order just for you. Please allow 3-5 weeks for Berkeley Ergonomics to produce and prepare your selection for dispatch.
On Display/Samples In-store
The Suspension Foundation is available to experience in-person (as a display model or physical sample) at these store locations: Calgary, Edmonton, and Sherwood Park.
Inventory Notice
Stock levels are updated frequently but are not real-time. Final availability and lead times will be confirmed at the time of order processing. Our team is available to assist with availability and lead times. Call us toll-free at 1-877-782-0816.
