Our 4'x8' Concrete Flow Diffusors offer an excellent means for sub-surface wastewater disposal.  The large chamber footprint, coupled with precast concrete's unmatched durability, enable contractors a fast installation and backfill process.  Meanwhile, providing nearly 140 gallons of surge capacity (per chamber) for high demand circumstances.  Maine State Sub-Surface Wastewater classifies the following disposal areas:

Trench Configuration, Side-Feed Flow Diffusor Only

• Utilize stone bed, 1-foot wide on 4-ft side(s) =  77 sq-ft / device
• Neighboring trench requires 3ft separation between stone bed edges

Cluster Configuration

• Each chamber = 64 sq-ft 
• Stone perimeter is not required

H-20 Model: Reinforced with additional rebar for driveways and parking lot installation

Specs

• Category: Leaching Products
• Use: Commercial, Residential
• Class: H-20
• Type: Concrete
• Weight: 2,225 lbs
• Capacity: 140 Gal
• Interior Dimensions: 3'-4 3/4" x 7'-4 3/4" x 9"
• Exterior Dimensions: 4' x 8 x 1'-1"
• Invert Out: 6.5"
• Invert In: 6.5"

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