A shower door apparatus comprising: a half-height shower door provided with a bottom seal element : a guide element to be mounted in fixed relation to a support member , whereby to stabilise a rotatable handle element during operation of the shower door apparatus ; and upper and lower pivot hinges , wherein said upper pivot hinge is provided by a shower door hinge mechanism said shower door hinge mechanism comprising: first and second co-operable hinge parts mountable to the shower door , wherein said second hinge part of the shower door hinge mechanism comprises a pin member rotatable within the first hinge part of the shower door hinge mechanism , the guide element locatable around the pin member ; and wherein the rotatable handle element is engageable with said second hinge part of said shower door hinge mechanism such that rotating said rotatable handle element rotates said pin member of said second hinge part within said first hinge part , whereby, in use, rotating said rotatable handle element causes said shower door to be lifted or lowered, wherein the first and second hinge parts of the shower door hinge mechanism form a rising butt hinge mechanism comprising respective ramped or inclined portions so configured as to cause relative translational movement between the first and second hinge parts upon rotation of one of the first and second hinge parts , wherein rotating said rotatable handle element causes the first hinge part of said shower door hinge mechanism to be moved into a raised or lowered position relative to the second hinge part of said shower door hinge mechanism . a half-height shower door provided with a bottom seal element : a guide element to be mounted in fixed relation to a support member , whereby to stabilise a rotatable handle element during operation of the shower door apparatus ; and upper and lower pivot hinges , wherein said upper pivot hinge is provided by a shower door hinge mechanism said shower door hinge mechanism comprising: first and second co-operable hinge parts mountable to the shower door , wherein said second hinge part of the shower door hinge mechanism comprises a pin member rotatable within the first hinge part of the shower door hinge mechanism , the guide element locatable around the pin member ; and wherein the rotatable handle element is engageable with said second hinge part of said shower door hinge mechanism such that rotating said rotatable handle element rotates said pin member of said second hinge part within said first hinge part , whereby, in use, rotating said rotatable handle element causes said shower door to be lifted or lowered, wherein first and second co-operable hinge parts mountable to the shower door , wherein said second hinge part of the shower door hinge mechanism comprises a pin member rotatable within the first hinge part of the shower door hinge mechanism , the guide element locatable around the pin member ; and wherein the rotatable handle element is engageable with said second hinge part of said shower door hinge mechanism such that rotating said rotatable handle element rotates said pin member of said second hinge part within said first hinge part , whereby, in use, rotating said rotatable handle element causes said shower door to be lifted or lowered, wherein the first and second hinge parts of the shower door hinge mechanism form a rising butt hinge mechanism comprising respective ramped or inclined portions so configured as to cause relative translational movement between the first and second hinge parts upon rotation of one of the first and second hinge parts , wherein rotating said rotatable handle element causes the first hinge part of said shower door hinge mechanism to be moved into a raised or lowered position relative to the second hinge part of said shower door hinge mechanism . <EOS>