客户的邮件有几句看不懂

这是一个木盒的要求 1.sides can be completely closed or with gaps between the bamboo-slats 是不是说盒子是全封闭的，或者是由一格一格的竹板拼的，允许有空隙？ 2.item is suitable for hand-wash 盒子可以被水洗吗？ 3.- tolerances (permitted variations to specified values/limits): plus and minus tolerances within a sales unit (su) may not be so combined as to impair the form and/or appearance and the function as a result. it is not permitted to deliberately use the tolerance limits. 这就看不懂了，是说允许误差吗？