Rob Roy Boiler Apr 29, 2024 16:43:59 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Barney66 on Apr 29, 2024 16:43:59 GMT Why do some Rob Roy boilers have 16 boiler stays (4 rows of 4) and yet others have 25 (5 rows of 5)? Professionally built ones often the latter.Thanks