Manufactured in England by Strictly Beds & Bunks Ltd. This product is made using the finest Scandinavian NATURAL PINE. This timber is sourced from sustainable forests.. Range Name Everest High Heavy Duty Bunk Bed . This is a heavy duty product designed for adults__ each base has been tested to the weight of two x 17 stone (108 kilos). The base slats are extra wide and made of solid pine__ for added strength this bunk has a base slat centre rail support system. The ladder has extra thick flat "easy on the feet" ladder rungs and can go to the left or right of the bed. The product is sold for easy home assembly. This model does not include a mattress__ the bed accepts a mattress size 135cm by 190cm. External Dimensions: 4ft 6 Double W143cm L202cm H185cm- Clearance between bunks 108cm__ clearance under bunk 36cm. Thick chunky 60mm corner posts.