900 mm ID

#0311 – 900 ID (36″) 0.3vm Manhole Riser

#0312 – 900 ID (36″) 0.61vm Manhole Riser

#0313 – 900 ID (36″) 0.91vm Manhole Riser

#0313-IB – 900 ID (36″) x 0.91vm Manhole – IB c/w Inside Base

#0313-MB – 900 ID (36″) x 1.07vm Manhole – Monolithic Base

#0316 – 900 ID (36″) Manhole Lid – 635 mm Op

#0317 – 900 ID (36″) Manhole Lid – 762 mm Op

#0318-B37 – 900 ID (36″) Manhole Lid – B37 Op

#0318-B19 – 900 ID (36″) Manhole Lid – B19 Op

#0319 – 900 ID (36″) Precast Manhole Base