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My Main Supply

Division of National Maintenance Supply is your source for plumbing, hardware, paint, lumber, electrical and janitorial supplies.


My Main Supply


82 Cantiague Rock Road
Westbury New York 11590
United States


1 800 494 4794

My Main Supply is a multi-generation family-owned business serving customers of every size for over forty years.

They are committed to providing you with the products that you need and to being your one-stop supplier.

My Main Supply maintains solid relationships with the most reliable brands in their respective industries.

They have more than 50,000 products in stock in their newly renovated state-of-the art warehouse.


About Westbury

The Incorporated Village of Westbury is a village in the Town of North Hempstead in Nassau County, on Long Island, in New York, United States. It is located about 18 miles (29 km) east of Manhattan. The population was 15,404 at the 2020 census. == History == The first settlers arrived in 1658 in the region known as the Hempstead Plains. Many of the early settlers were Quakers.

Neighborhoods in Westbury, New York

Things to do in Westbury, New York



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