Premium Shallow Base 4200
Premium Shallow Base 4200
Premium Shallow Base 4200
Premium Shallow Base 4200
Premium Shallow Base 4200

Premium Shallow Base 4200

$2,920.00 CAD

The Harrison Spinks Premium Shallow Base 4200 Includes Free In-Home Delivery & Setup in the Calgary & Edmonton Areas.


The Harrison Spinks Premium Shallow Base 4200 is available for purchase in-store only.

This pocket coil box spring offers a higher spring count than most mattresses! With over 4,200 springs in queen size or 5,100 in king size, the addition of the Harrison Spinks foundation is as if you're adding a second mattress.

A functional support system and flexible box springs such as this are designed to make your mattress last longer. By absorbing and distributing energy, the workload on the mattress is reduced significantly. Think of this foundation as working in the same way as the suspension on a vehicle.

Availability: In-Store (On Display in Calgary, Edmonton & Sherwood Park + Select Inventory in Our Calgary Warehouse)

Harrison Spinks Manufacturing Guild Mark Harrison Spinks Awards Mattress features generous helpings of natural fibres Pure non-allergenic wool to regulate temperature and humidity

Premium Shallow Base Details

  • Fine quality fabric ticking
    • Silver Grey Wool Style fabric colour is standard
    • All-natural foam-free fillings
      • Cotton
      • British Wool
      • Hemp
    • A deeply supportive pocket spring system
      • 100% recyclable, sustainable, glue-free spring layer
      • All spring components are made in-house by Harrison Spinks
    • Coil Counts:
      • 4,200 in Queen Size
      • 5,100 in King Size
    • Foundations are split head-to-toe. There is a "left" and a "right" foundation for all queen and king mattresses to facilitate easier moving and installation. These separate boxsprings also enhance the motion separation between sleeping partners
    • Wooden legs included
      • Install the legs to use these foundations without a bedframe
      • Leave the legs off and place the foundations inside of an existing metal, wood or upholstered bedframe
      • Legs are finished in a light natural colour
    • Made in England
      • Harrison Spinks own and manage 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


    • Height of foundation: 8" | 20 cm
      • Height of foundation to crown: 8.5" | 21.5 cm
    • Height of legs: 4" | 10 cm
    • Total height w/ legs installed: 12" / 30 cm
      • Height to crown w/ legs installed: 13.5" | 35 cm

    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 higher than the edges.

    Boxspring Dimensions

    Dimensions for our most popular boxspring types. Visit us in-store for custom sizes and additional selection.

    Simply add the mattress height to any of the heights listed below for a total bed height. If you're placing one of these foundations on an existing bed frame, be sure to include the height from the floor to the support structure of your existing bed to determine the total bed height.

    Foundation Heights (Imperial) Foundation Heights (Metric) Leg Height Total Height w/ Legs
    Berkeley Standard Slat Foundation 2 ½"
    8 ½"
    6 cm
    10 cm
    18 cm
    21.5 cm
    Not available Not available
    Berkeley Suspension Slat Foundation (our best-selling boxspring) 2 ⅜"
    6 ½"
    6 cm
    10 cm
    16.5 cm
    23 cm
    Not available Not available
    Harrison Spinks Premium Foundation 8" 20 cm 4" | 10 cm 12" | 30 cm
    t•masc Foundations 4"
    10 cm
    18 cm
    3" 7" | 18 cm
    10" | 25 cm
    Beaudoin Breeze Platform Bed 13"
    w/ legs installed
    33 cm
    w/ legs installed
    14 ⅝" (height to top of upholstered side rails)
    Ergomotion 330 Adjustable Bed 8" 20 cm 3"
    Varies from 11 to 16"
    Ergomotion 390 Adjustable Bed (our best-selling electric base) 8" 20 cm 3"
    Varies from 11 to 16"

    Additional Reading

    Platform Bed & Boxspring Guide (opens in new tab)

    Estimated Delivery, Shipping Costs & Availability

    Varieties Which Are Typically In-Stock

    The Premium Shallow Base 4200 is typically stocked in Queen and King. Please see the lead times below for situations when the Premium Shallow Base 4200 is sold out or for other sizes and configurations.

    Lead Times for Out-of-Stock & Special Orders

    Unless otherwise noted above, Harrison Spinks is made to order in Leeds, England. Please allow 12-16 weeks for delivery.

    Delivery Costs & Available Services

    In-home delivery and setup of your new Harrison Spinks bed is included at no extra cost in the Calgary and Edmonton areas. In addition, our professional delivery teams are able to travel to most locations in Alberta for a reasonable cost.

    Removal of your existing mattress, bed frame and furniture is also available upon request.

    Located elsewhere in Canada? Delivery of Harrison Spinks outside of Alberta is on a case-by-case basis. Please Send Us a Message or call us Toll-Free on 1-877-750-1212 to inquire.

    General Availability Advice

    The Mattress & Sleep Company is a family owned and operated business based in Alberta, Canada. We specialize in high-quality bedding, bath and mattresses from Canada, Europe and the USA. Our vast selection makes it impossible to stock everything. For this reason, our website does not offer real-time inventory availability as many of our products are made to order.

    Please read the availability details above as we do make an effort to draw attention to products which are typically in stock in our Calgary, Edmonton and Sherwood Park stores and warehouses.

    For time-sensitive needs, please give us a call Toll-Free on 1 (877) 750-1212 or Send us a Message and we will be delighted to help.

    The Sleep Sound Guarantee®

    We shop our competition on a regular basis to ensure The Mattress & Sleep Company offers competitive prices 365 days a year. However, it is impossible to guarantee we're always the lowest price out there. For this reason, we'll match or beat* any authorized retailer's advertised or privately quoted price.

    If you've found what appears to be the same product for a lower price, Submit a Price Match Request. We would be delighted to work with you to earn your business.