I want to shorten this boiler cupboard (details in post) : r/DIYUK
Regulations for Installing a Boiler in the Kitchen Cupboard - spboilerservices.co.uk
Utility Renovation: Boiler Cupboard
BricoLoco.com Bricoloco Outdoor Metal Boiler Cover Cabinet for Gas Boilers or Thermos 100 x 55 x 44 cm (Height x Width x Depth) : Amazon.co.uk: DIY & Tools