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Premium True Edge Base
Genuine Boxspring w/ 4,200 Pocket Springs
OEKO-TEX® Standard 100 Certified | Spring Count (King): 5100
Handcrafted in the UK since 1840
Premium True Edge Base - Twin/Single (38 x 74") / Shallow Base (20 cm | 8") is made to order or backordered. Please review our availability & lead times section for details.
Select best-selling variants are typically held at our Calgary and St. Albert Warehouses for white-glove local delivery, immediate collection or nationwide freight.
Stock levels are updated frequently but are not real-time. Once availability is confirmed, in-stock orders are shipped/ready for pickup within 1-2 business days.
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 handmade, 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 can craft a mattress in just about any of these uncommon mattress dimensions. Check out our custom mattress category as a starting point for sourcing these sizes.
| Old Style Single | 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 depending on the manufacturer.
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 within the acceptable tolerance.
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The British Luxury Collection
The Mattress & Sleep Co. invites you to start your farm to bedroom journey today
Download the digital brochure (PDF - new tab)
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Real Homegrown Luxury
Harrison Spinks beds don’t start life in a factory but on the Harrison Spinks 300-acre farm in North Yorkshire. It is there that they rear sheep on rich untreated pastures and tend fertile fields of hemp and flax crops
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Farm to Bedroom
We'll deliver, unpack and place your new Harrison Spinks bed in the room of your choice - anywhere in the Calgary & Edmonton areas
Premium True Edge Base Specifications
The multiple layers of natural fillings and pocket springs found in this handcrafted masterpiece are listed in order from top-to-bottom, beginning with the fabric ticking, woven in-house by Harrison Spinks.
- Fine-quality fabric ticking
- Silver-grey wool-style fabric colour is standard
- Available on request in a wide selection of designer fabrics
- All-natural foam-free fillings
- Cotton
- British Wool
- Hemp
- Two-layer micro pocket spring system
- 100% recyclable, sustainable, glue-free spring layer
- All spring components are made in-house by Harrison Spinks
- Coil Counts:
- 4,200 pocket springs in queen size
- 5,100 pocket springs in king size
- Bases are split in two for all queen and king beds, and the orientation of the split depends on the height of the base
- Deep Divan Bases: Split in half from east to west (head and foot pair)
- Shallow Bases: Split down the middle from head to toe (left and right pair)
- Slim Bases: Split in half from east to west (head and foot pair)
- Deep Divan Bases are available with optional storage drawers
- Wooden legs are included
- Install the legs to use the base without a bedframe or with a matching Harrison Spinks upholstered headboard
- Leave the legs off and place the base inside an existing metal, wood or upholstered bedframe
- Available with a choice of leg styles and finishes (selection varies by base type)
- Handcrafted in the United Kingdom
- Harrison Spinks owns and manages their own 300-acre farm in North Yorkshire, which produces wool, hemp and flax
- The farm is located just 18 miles away from the factory in Leeds
- Expertly woven in-house fabrics produced at the factory in Leeds
- Each boxspring is handmade in Leeds
Dimensions
- Deep Divan Base: 30 cm | 12" tall
- Castors add 6 cm to the total height
- Glides add 5 cm to the total height
- Shallow Base: 20 cm | 8" tall
- Shallow legs add 9 cm to the total height
- Slim Base: 12 cm | 4.7" tall
- Capped slim legs add 17 cm to the total height
As this is a functional boxspring, the springs and natural fillings create a "crown" effect. This means the inner portions of the boxspring are slightly taller than the edges.
About the Harrison Spinks Premium True Edge Base
About the Harrison Spinks Premium True Edge Base
About Harrison Spinks
Inventors, innovators, and passionate perfectionists since 1840, Harrison Spinks has invented the world-leading pocket spring technology used throughout their mattress collections.
Harrison Spinks 300-acre farm is located in North Yorkshire, Great Britain. The factory campus is located just 18 miles west of the farm in Leeds.
About TMASC
About TMASC
120 Night Comfort Trial
120 Night Comfort Trial
Harrison Spinks 120 Night Comfort Trial
Mattress & Sleep Company believes that Harrison Spinks crafts the best traditional handmade foam-free mattresses in the world.
Their micro spring technology is unlike any other. As a result, Harrison Spinks British Luxury Collection beds are more substantial and comfortable than other luxury mattress offerings.
We also firmly believe that Harrison Spinks' uniquely vertically integrated production results in astonishingly competitive pricing compared to its peers.
For these reasons, we offer exchanges in a limited context on Harrison Spinks mattresses:
- Harrison Spinks exchange privileges are available only to our local customers (Calgary, Edmonton & Vancouver areas).
- You must purchase a mattress protector with the original mattress invoice and use it at all times.
- Initiate an exchange between 30 and 120 nights from the date of delivery.
- Exchanges are only available for Queen and King size mattresses.
- Split-firmness (i.e., half medium/half firm) Queen and King mattresses are ineligible for exchange.
- A 25% exchange fee will be applied to the returned mattress's prevailing retail price. For clarity, the retail price is the price published on tmasc.ca when an exchange is initiated.
- If the newly selected mattress is priced lower than the returned mattress, we will issue an in-store credit for the difference (less the 25% exchange fee).
- Rips, stains or any such wear & tear invalidate this exchange privilege.
- Mattress toppers and luxury enhancers are ineligible for this exchange privilege.
- For added clarity, refunds are not permitted. The 25% exchange fee includes the cost of delivering the newly selected mattress and returning the original mattress.
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 Premium Base Variants
Queen (60 x 80") / Shallow Base (20 cm | 8")
King (76 x 80") / Shallow Base (20 cm | 8")
King (76 x 80") / Slim Base (12 cm | 4.7")
California King (72 x 84") / Shallow Base (20 cm | 8")
California King (72 x 84") / Slim Base (12 cm | 4.7")
Premium Base Lead Times
If a specific variant isn't listed as 'Regularly Stocked,' it is made to order just for you. Please allow 8-16 weeks for Harrison Spinks to produce and prepare your selection for dispatch.
On Display/Samples In-store
The Premium True Edge Base 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 1-877-750-1212.
It's not one thing that makes Harrison Spinks extraordinary - but many.
Harrison Spinks Premium True Edge Base
Harrison Spinks @ TMASC - Mini-FAQ
Travel credits available on Harrison Spinks & TEAM 7
Travel credits available on Harrison Spinks & TEAM 7
Do you offer a trial period on Harrison Spinks?
Do you offer a trial period on Harrison Spinks?
Do you keep mattresses in stock?
Do you keep mattresses in stock?
Will you remove my old mattress?
Will you remove my old mattress?
Do you offer installation services?
Do you offer installation services?
Where are your stores located?
Where are your stores located?
What are your hours of operation?
What are your hours of operation?
Where do you deliver?
Where do you deliver?
