From the moment I walked in until the moment I left, I had no doubts that the staff was knowledgeable and had my best interests. GPM is an Authorized Dealer of Marquis Hot Tubs and Spas, Big Green Egg grills, Bioguard Pool and Spa chemicals and accessories, designer outdoor furniture, as well as a major Long Island supplier of name brand irrigation and low voltage landscape lighting parts and supplies. From fixing the simplest lawn sprinkler problem to reinventing your outdoor environment, GPM is the company you need.