Telescopic Access Collar

A Telescopic Access Collar is an adjustable polyethylene (PE) liner for manhole-grade adjustment rings. The collar provides protection for grade rings from corrosion and water infiltration for a fully-lined concrete structure; it allows both vertical and horizontal adjustments to suit the grade and chamber. The Telescopic Access Collar is a one-piece, rotationally molded polyethylene sleeve with a 2” (50mm) sealing flange around the top edge. The inside diameter of the access opening is 24” (610mm). It is installed with a lip seal gasket allowing for an effective adjustable height of 8” (203mm).

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5A

5A.PDF - Predl Systems Telescopic Lid Liner Detail for Concentric Cone, Turnback and Cap Stip Joint, Fully Lined Precast 48" Manhole (ASTM 478).

5AA

5AA.PDF - Predl Systems Telescopic Lid Liner Detail for Concentric Cone for Turnback Joint, Fully Lined Precast 48" Manhole (ASTM 478)

5AAA

5AAA.PDF - Predl Systems Telescopic Lid Liner Detail for Concentric Cone for Cap Strip Joint, Fully Lined Precast 48" Manhole (ASTM 478)

5B

5B.PDF - Predl Systems Lined Concentric Flat Top Manhole Lid with Telescopic Liner, FRP/PP-R Turnback Joints w/Cap Strips, and Two Butyl Sealant Strips.

5BB

5BB.PDF - Predl Systems Telescopic Lid Liner for Flat Top, Turnback and Cap Strip Joint Precast Manhole w/Bolt Down Frame

5BC

5BC.PDF - Predl Systems Telescopic Lid Liner Details for Eccentric Flat Top 1050mm Manhole Lid (ASTM 478)