CSN EN 14527 This European Standard specifies requirements, test methods and procedures for evaluation of conformity for shower trays used for domestic purposes which ensure that the product, when installed, used and maintained in accordance with the manufacturer's instructions, will satisfy cleanability and durability when used for personal hygiene. This standard is applicable to all sizes and shapes of shower trays. This standard does not cover shower trays for use with medical provisions. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.