1800 mm ID

#0371 – 1800 ID (72″) x 0.3vm Manhole Riser

#0372 – 1800 ID (72″) x 0.61vm Manhole Riser

#0373 – 1800 ID (72″) x 0.91vm Manhole Riser

#0373-IB – 1800 ID (72″) Manhole – IB c/w Inside Base

#0376 – 1800 ID (72″) Manhole Lid – 635 mm Op

#0377 – 1800 ID (72″) Manhole Lid – 762 mm Op

#0377-B37 – 1800 ID (72″) Manhole Lid – B37 Op

#0377-B19 – 1800 ID (72″) Manhole Lid – B19 Op

#0379 – 1800 ID (72″) Precast Manhole Base