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The Contactor® 100HD is a 12.5" (318 mm) high, low profile chamber and is typically used for installations with depth restrictions or when a larger infiltrative area is required. The Contactor 100HD has the side portal internal manifold feature. The HVLV™ SFCx2 Feed Connector is inserted into the side portal of the Contactor 100HD to create the internal manifold.

Available models:
Contactor 100RHD Heavy Duty Stand Alone/Starter Unit
Contactor 100EHD Heavy Duty Middle/End Unit

Check out our StormGenie Automated Drawing Program to design your Contactor 100HD Stormwater System.

Complete your preliminary calculations using our Stormwater Design Calculator.

Click here to request our CULTEC Stormwater Design Guide.
Unit of Measure


N/A 8.00 ft2.44 m


N/A 36 in914 mm


N/A 12.50 in318 mm

Installed Length

N/A 7.50 ft2.29 m

Length Adjustment per Run

N/A 0.50 ft0.15 m

Chamber Storage

N/A 1.87 ft³/ft14.00 ft³/unit105 gal0.17 m³/m0.40 m³/unit396.88 L

Min. Installed Storage

N/A 3.842 ft³/ft28.81 ft³/unit216 gal0.36 m³/m0.82 m³/unit815.9 L

Min. Area Required per Unit

N/A 25 ft²2.32 m²

Min. Center-to-Center Spacing (Design Unit Width)

N/A 3.33 ft1.02 m

Max. Allowable Cover

N/A 3.66 m12 ft

Max. Inlet Opening in End Wall

N/A 10 in250 mm

Max. Allowable O.D. in Side Portal

N/A 6.9 in175 mm

Compatible Feed Connector

N/A HVLV SFCx2 Feed Connector