Pentair Large Stainless Steel Niches for Concrete 1" Top Hub | 78210500
Pentair
SKU: 78210500
Pentair Large Stainless Steel Pool Light Niche for Concrete Pools, 1" Top Hub (10-Hole Pattern) | 78210500
The Pentair 78210500 is a large stainless steel underwater light niche designed for concrete (gunite/plaster) pool and spa installations. This niche provides a durable, corrosion-resistant housing for compatible large-format niche-style pool lights and includes a 1" top hub for conduit routing up to a junction box.
Key Features
- Concrete pool installation: built for setting into gunite/plaster pools and spas.
- Large niche format: for compatible large pool/spa lights using the standard 10-hole mounting pattern.
- 1" top hub: top-mounted hub for conduit/cord routing and installation layout flexibility.
- Stainless steel housing: long-lasting, corrosion-resistant niche body.
- Brass hub/fittings (typical): robust conduit connection components.
- Bonding provisions: internal and external bonding/grounding lugs to support code-compliant bonding.
- OEM Pentair niche: intended for use with compatible Pentair/American Products large niche-style lights.
Compatibility
- Pool Type: Concrete (gunite/plaster) pools and spas
- Light Type: Large niche-style underwater lights using a 10-hole pattern
- Tip: Confirm your existing niche pattern (10-hole), niche size (large), and hub location/size (1" top hub) before ordering—large niche parts are not interchangeable with small niche or nicheless light systems.
Specifications
- Brand: Pentair
- Part Number: 78210500
- Niche Type: Large stainless steel niche
- Installation: Concrete pools/spas
- Mounting Pattern: Standard 10-hole
- Hub Location: Top
- Hub Size: 1"
- Bonding Lugs: Internal and external
- Quantity: Sold individually
Common Reasons to Replace
- Corroded or damaged niche during renovation or major lighting upgrade
- Stripped or damaged hub/conduit connection
- Restoring proper bonding/grounding provisions on an older installation
- Converting to a compatible large niche light system requiring a large stainless niche
Installation Notes
- Underwater lighting and bonding/grounding work should be performed by a qualified pool professional/electrician per local code.
- Plan conduit routing from the 1" top hub to a listed pool light junction box in the required location.
- Confirm the niche is set square and at the correct elevation before gunite/plaster—misalignment can affect face ring fit and gasket sealing.
- Use compatible large-light sealing components (lens gasket, face ring/clamp hardware) specific to your light model.
Related Products
- Pool Light Junction Box (78310500)
- Large Light Stainless Face Ring (79110600)
- Large Light Lens Gasket (79101600Z)
- Large Niche Plaster Ring (79211600Z)
- 1" Conduit & Fittings for Pool Lights
- Large Pool Light Parts
Maintenance Tips
- Any time a light is opened for service, replace the lens gasket and ensure clamping hardware tightens evenly.
- Keep bonding connections clean and secure—corrosion at bonding points can create reliability and safety issues.
- Maintain balanced water chemistry to reduce corrosion risk on metal components over time.
- If you see fogging/water behind the lens or repeated GFCI trips, shut off power and have the system inspected immediately.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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