Deep Laminated Fibreglass Sand Filters are provided with transparent lid cover that allows easy inspection of the sand bed. These Sand Filters are equipped with top diffuser, which ensures even distribution of water over the top of the sand bed. These Sand Filters are provided with easy to use multiport valve to let the user select any of the valve or filter operation with a simple lever action. Deep Laminated Fibreglass Sand Filters find application in spa, private or semi-commercial swimming pools, aquarium and water amusement park.