{"product_id":"bulb-400w-120v-r40-medium-base","title":"SuperPro 400W 120V R40 Medium Base Bulb","description":"\u003cp\u003eThe SuperPro R40FL400\/HG is a 400 watt, 120 volt replacement bulb in the R40 reflector shape with a standard medium screw base.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the ratings mean\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eR40 describes the envelope: a wide reflector that gathers light and throws it forward, which is exactly what an underwater fixture needs to push light through the lens and out into the pool. The medium base is the same screw thread as a common household lamp, and the 400 watt, 120 volt rating puts it in the large fixture class.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck before you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAll three numbers have to match the fixture: wattage, voltage and base. A 12 volt fixture cannot take a 120 volt lamp, and fitting a bulb above the rated wattage builds heat the housing was never designed to shed. The rating is printed inside the fixture, so read it rather than working from the old bulb alone, which may itself have been the wrong part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eKill the power at the breaker before opening the light. Handle the new lamp by its base, since oils from your fingers on the glass create hot spots that shorten life, and inspect the lens gasket while the fixture is open.\u003c\/p\u003e","brand":"Halco Lighting","offers":[{"title":"Default Title","offer_id":48626576982228,"sku":"SPG-301-7683","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_791c29ab-b6d0-4274-803d-bd1b60b02b2f.jpg?v=1788712644","url":"https:\/\/www.activepoolsupply.com\/products\/bulb-400w-120v-r40-medium-base","provider":"Active Pool Supply","version":"1.0","type":"link"}