{"id":3524,"date":"2026-10-08T17:24:41","date_gmt":"2026-10-08T09:24:41","guid":{"rendered":"http:\/\/www.lotfitrade.com\/blog\/?p=3524"},"modified":"2026-10-08T17:24:41","modified_gmt":"2026-10-08T09:24:41","slug":"what-size-is-a-par56-pool-light-4110-92921e","status":"publish","type":"post","link":"http:\/\/www.lotfitrade.com\/blog\/2026\/10\/08\/what-size-is-a-par56-pool-light-4110-92921e\/","title":{"rendered":"What size is a PAR56 pool light?"},"content":{"rendered":"

Hey everyone, if you\u2019ve ever dug into upgrading your pool lights\u2014especially swapping those old, clunky incandescent ones for LED\u2014you\u2019ve definitely stumbled on PAR56 lights. I get it, pool lighting can feel like a maze of numbers and codes, so today I\u2019m breaking down exactly what size a PAR56 pool light is, straight from someone who\u2019s worked with these bad boys for years as a PAR56 LED pool light supplier. No confusing jargon, promise. PAR56 LED Pool Light<\/a><\/p>\n

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First off, let\u2019s get this straight: PAR56 isn\u2019t some random set of numbers. That PAR stands for \u201cParabolic Aluminized Reflector\u201d if you want the fancy science term, but honestly, for pool folks like us, it\u2019s just the type of light fixture that\u2019s built to throw light straight (or at a slight angle) where you need it\u2014no wasted light bouncing around. The number 56? That\u2019s the key part everyone asks about. It\u2019s measured in eighths of an inch, so 56 divided by 8 is 7 inches. Wait, hold up\u2014wait, is that the exact size? Let\u2019s not stop there, because there\u2019s way more to it than just the rough 7-inch number.<\/p>\n

Let\u2019s dive into the nitty-gritty that actually matters when you\u2019re fitting one into your pool\u2019s niche (that\u2019s the cutout in the pool wall where the light sits, right?). The overall exterior diameter of a standard PAR56 pool light fixture is almost always just under 7 inches\u2014like, 6.875 inches, to be precise. That\u2019s important because if your niche is cut for a PAR56, you can\u2019t force a PAR38 in there (trust me, I\u2019ve had customers panic when they ordered the wrong size and had to return a whole shipment). Then there\u2019s the mounting ring\u2014bezel, whatever you call it\u2014that sits flush against the pool wall. Most PAR56 bezels add about a quarter inch to that diameter, so the total width of the bezel is around 7.125 inches. That makes sense, right? The bezel covers the edge of the niche to keep water from seeping behind the light.<\/p>\n

But here\u2019s the thing people don\u2019t talk about enough: size doesn\u2019t stop at width. There\u2019s also the depth of the fixture, which is super critical for above-ground vs in-ground pools. The PAR56 LED lights I supply come in two main depth sizes\u20142.5 inches for shallow pool niches (usually above-ground pools that don\u2019t have super deep wall cutouts) and 3.5 inches for deeper in-ground pool niches. If you buy a PAR56 that\u2019s too deep, it\u2019ll stick out past the niche and you\u2019ll have a gap around the bezel that\u2019s a pain to seal. Too shallow, and you can\u2019t get the wiring to connect properly, which is just a headache you don\u2019t need.<\/p>\n

Let me also clear up a common mix-up between PAR56 and other PAR sizes, because I see this all the time in supplier inquiries. PAR38 is 4.75 inches, PAR64 is 8 inches\u2014so PAR56 is right in that middle spot, tailored specifically for standard pool niches built between the 1970s and today. Old pools with super tiny niches might actually need a PAR46, but 9 times out of 10, if you have a pool that\u2019s more than 20 years old, it\u2019s a PAR56 niche. And here\u2019s a pro tip: when you\u2019re measuring your old light\u2019s housing, don\u2019t just go by the printed PAR number on the bulb\u2014measure the actual metal housing, because sometimes old incandescent PAR56s were slightly thicker, and LED replacements are slimmer, but the width\u2019s always the same.<\/p>\n

Now, as someone who\u2019s been selling PAR56 LED pool lights for 8 years, I can tell you size isn\u2019t the only thing that matters, but it\u2019s the foundation. You could have the brightest LED on the market, but if it doesn\u2019t fit your niche, it\u2019s useless. I\u2019ve had a customer come to me last month who bought a \u201cPAR56\u201d from another supplier, tried to jam it into his in-ground pool, and it wouldn\u2019t seat\u2014turns out that other company used a rounded measurement instead of the exact 6.875-inch diameter, so it was a hair too big. That\u2019s the kind of mistake we avoid at our place\u2014we measure every single fixture three times before it leaves our warehouse, because we know how frustrating it is to have to drain part of your pool just to take out a light that doesn\u2019t fit.<\/p>\n

Another common question: can you use a PAR56 light in a hot tub? Short answer\u2014mostly not. Hot tub niches are way smaller, usually around 4 to 5 inches, so PAR56s are way too big. Stick to PAR36 or smaller for spas. But for inground pools, above-ground pools that use traditional surface-mount niches, and even some custom-built saltwater pool setups, PAR56 is the gold standard. And with LED versions now, they\u2019re way more efficient than the old halogen PAR56s that used to eat through electricity\u2014we\u2019re talking 80% less energy, no bulbs to burn out every year, and the light is way more even across the pool floor.<\/p>\n

Wait, let\u2019s get back to the exact measurements, because I know some of you are visual learners (or you\u2019re holding a tape measure right now checking your niche). Let\u2019s break it down inch by inch, no math required:<\/p>\n