9 Brothers Building Supply is your leading foundation ventfoundation flood vent supply company!

Amityville Foundation Vents

9 Brothers Building Supply carries a selection of Amityville foundation vents from top brands such as Monarch Materials Group and Smartvent. These vents will ensure ventilation in any season and Smartvent flood vents allow flood water to drain out helping to reduce possible flood damage that would otherwise occur with a regular vent or no vents. Stop in at one of our locations in Brentwood or Riverhead today to see our selection of foundation vents!

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Brentwood Location


1670 Islip Ave. 
Brentwood, NY 11717

Riverhead Location


28 Mill Road
Riverhead, NY 11901


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Forklift & Boom Service

a mini crane service for tight or hard to reach delivery spots!

Delivery Service

with our fleet of ready to haul trucks anywhere on Long Island, NYC & 5 Boroughs

Consult Us

to build your dream backyard, driveway, landscape, pool, or patio!

Delivery across Long Island, NYC, and the 5 boroughs

Construction Site Delivery

Local Pickup

Home Delivery

Contractor & Local Business Deliveries