British Standard Products Each Yale British Standard product is covered by a 10 year consumer guarantee against faulty workmanship, materials and function from the date of purchase providing it is used in accordance with the full installations and maintenance instructions. Please keep your proof of purchase safe as this must be submitted when making a claim under this guarantee. It is a condition of this guarantee that your Yale product: Has been correctly installed and maintained in accordance with the Yale installation and maintenance instructions provided to you at the time of purchase. Has not been modified in any way. Has not been subjected to unauthorised repairs. Yale are responsible under this guarantee for repairing the product or replacing the product as we deem necessary. If there is a fault with the product, please contact Customer Services on 01902 364647, who will give you the name of an expert and confirm what you need to do to make a claim under this guarantee. Please do not carry out any repairs without our authority or by using an unauthorised expert. Any repairs or other works carried out without our authorisation or by using an unauthorised expert will not be covered under this guarantee. This guarantee is non transferrable and applied to products purchased in the United Kingdom only. This guarantee does not apply to normal wear and tear. This does not affect your statutory rights.