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Celmac Sonata Heavy Duty Double Flap Toilet Seat & Cover Black | SSO11BL

Celmac Sonata Heavy Duty Double Flap Toilet Seat & Cover Black | SSO11BL


Regular price £42.23 GBP
Regular price £42.23 GBP Sale price £42.23 GBP
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The Celmac Sonata toilet seat is designed to meet the rigours of high use areas like Schools, Hotels, Pubs & public conveniences and boast strength and durability

Specified by architects and local authorities because of it’s superior heavyweight construction

The only thermoset toilet seat in the UK manufactured to the exacting standards of BS1254 Type 1 and features natural anti-bacterial properties

Supplied with standard plastic DPP hinges including bar

Features & Benefits

  • For high use areas like Hotels, Pubs & public conveniences
  • Superior heavyweight construction
  • Manufactured to standards BS1254 Type 1
  • Adjustable hole centres – 130mm to 177mm
  • Size 446-461mm (D) x 387mm (W)
  • Supplied with standard plastic DPP hinge and bar

Product Specification

Product Code - 5PTC0290

Brand - Celmac

Manufacturer Code - SS011BL

Weight - kg

Finish - Black

Manufactured in - United Kingdom

Hinge - Plastic

Product Type - Commercial Seat

EAN - 5012158653484

About Celmac

Celmac have been producing toilet seats since 1890. The UK’s leading brand of toilet seats are designed and produced to meet a wide range of design and technical specifications some of which have set British Standards. Innovative manufacturing ensures that the thermoset and thermoplastic seats are resilient and easy to install.

Celmac have produced toilet seats for over 125 years and is historically renowned for the 1930’s black crescent shaped school seat with the gap in the front (Crescent) which are not dissimilar to the current Crescent range. Celmac worked with the pottery manufacturers of Stoke to initiate British Standard 1254 Type 1 with the Sonata seat and the BS1254 Type 2 with the Emerald seat which are still manufactured today and popular in the specification channel. Celmac was originally known as Robert McArd Ltd, after its founder, who left his thriving business to his daughters, Celia, Elizabeth and Lucy McArd and the company name was changed to incorporate their initials, Celmac Ltd In the 1930s

Celmac was one of the first companies to experiment with use of plastics. The early moulded plastic seats were made in Bakelite where now they are more environmental friendly using thermoset material made from urea formaldehyde. Celmac Wirquin is continuously working to improve its materials and designs to lead market trends

Delivery & Returns

Please Note: 

Free delivery and Express delivery services are not applicable for orders destined for international countries, specific out-of-area postcodes in the UK, and products requiring specialist delivery. A surcharge of £5.95 may be incurred for deliveries to out-of-area postcodes and £4.95 for specialist deliveries. For comprehensive information regarding out-of-area postcodes, kindly refer to the 'Out of Area Charges and Delivery Times' section below

We have a number of Home Delivery services available to you. Availability of these options will be shown at checkout.

Delivery Service Description Please Note Price
Free Delivery Within 3-4 working days (07:00 - 19:30hrs) Weekdays Only
(only applies to orders placed before 1pm)

FREE on Orders above £50*

Express Delivery Next Working Day (08:00 - 18:00hrs) Weekdays Only, applies to orders placed before 1pm Mon-Fri



PLEASE NOTE: Orders placed after 1pm, will be processed the following day, adding 1 working day to the delivery service. When selecting 'Next Working Day' - Orders placed after 1pm on a Thursday or anytime on Friday, will be delivered on the next working day which is the following Monday. For orders placed on a non-working day (Saturday or Sunday) please add 1 working day to your delivery date 


International Delivery

We do offer International shipping via DHL. Please contact us for a shipping quote. Delivery times are between 2-5 working days from dispatch for most destinations.



We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. You’ll also need the proof of purchase such as order number or original email used when placing order.

To start a return, you can contact us at

If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at


Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.


Exceptions / non-returnable items

Certain types of items cannot be returned, like custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on gift cards.



The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.



We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 3-5 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at

For more information about returns, please visit the link below

Returns & Exchanges

  • Free UK Shipping

    We offer Free UK Standard Shipping on ALL orders above £50. Your order will generally reach you within 2-5 working days from dispatch.

  • International Delivery

    We do offer International shipping via DHL. Please contact us for a shipping quote. Delivery times are between 2-5 working days from dispatch for most destinations.

  • Price Match Guarantee

    If you find a lower price on an identical item from a competitor, we will match it, ensuring you get the best deal available.

    Read More 

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