Please fill out the below form completely to request information about our products. Our team will follow up with you promptly.
Please fill out the below short form to validate your voucher.
A Key Component of any Sewage Disposal System
The distribution box, or D-box, is a key component of any sewage disposal system. Effluent (wastewater) leaves the septic tank and enters the distribution box, where the effluent must be evenly divided and discharged to the leaching system. It is critical that they are set level to prevent unequal distribution, which is a main factor of failed leach fields. Polylok© equalizers can be used to equalize an uneven D-box. The easiest way to test for levelness is to add water to the D-box.
For the system to function properly, all discharge pipes must receive equal amounts of effluent. If the fluid flow is unequal or inconsistent, the effluent will not be uniformly distributed throughout the leach field. One section of the leach field will receive effluent in excess of the design amount, while another section will receive little or no effluent. Distribution boxes are sometimes used to monitor the effluent going to the leach field.
Available in Five Sizes
To complement our full line of septic tanks, A.J. Foss offers six sizes of precast concrete distribution boxes, ranging from 5-outlet boxes to 28-outlet boxes.
H-20 Distribution Boxes Available
We also carry H-20 Distribution boxes for use below driveways, parking lots, and traffic areas. They are available in 14 Outlet, 18 Outlet, & 24 Outlet sizes. Please contact us for exact dimensions available.
Plastic distribution boxes are also available; please contact us to discuss your project.
Formed With High-Quality Concrete
Our team crafts each precast concrete distribution box using high-quality 5,000 psi concrete that is regularly tested using ASTM C31 and C39 quality testing guidelines. Our Type III high early strength cement is also tested monthly to ensure that it complies with ASTM Standard C 150 and AASHTO M 85 requirements.
We use Polylok© Low Pressure Pipe Seals in our distribution boxes. These seals require no sealing or mortaring, and accept pipe from two to four inches. Also, several pipe classes will work including: Schedule 40, sewer and drain, and SDR 35 pipe.
Contact us to discuss your projects throughout New Hampshire, Maine and Northern Massachusetts that require wastewater and stormwater products, and discover the A.J. Foss difference for yourself.
When the gentleman showed up Friday morning, I Knew that he had been on the road for two or so hours and arrived promptly at 8 AM He Was friendly and had the bulkhead installed in ...Full Testimonial >
Your driver certainly knows how to give excellent customer service and I really appreciated not just what he did, but most of all his helpful and encouraging attitude. This kind of...Full Testimonial >
In many communities – particularly ones located near water bodies or with homes that depend on wells for drinking water – property owners are being encouraged or even required ...Full Article >
Waterfront property is abundant throughout New Hampshire, Maine and Massachusetts. For properties along these waterfronts, AJ Foss offers the ideal solution – the NORWECO Singula...Full Article >
Many factors, such as a small lot, require homeowners to cope with the limitations of a small leachfield on their property, prompting them to seek an alternative septic system solu...Full Article >
Choosing a Septic Treatment System is an important decision for homeowners. This article compares the NORWECO wastewater treatment system against the closest competitor.Full Article >