We contacted JTspas for the substitution or refund. They refused but supplied £fifty goodwill gesture for any weakened £550 shower that we won't use. Evidently we should have checked items in 48 hours - but it's far too large and weighty for an older person to complete. Spa Vacuums - https://www.reviews.co.uk/company-reviews%2Fstore%2Fjt-spas