P645-AT
6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing
P645-AT 6" 45 New Construction Air-tight & IC Sloped Ceiling Housing is a recessed-lighting housing designed for new-build installations, featuring an airtight, insulation-contact (IC) rated enclosure for sloped ceilings. Priced at $149.88, it delivers code-compliant, moisture-resistant performance ideal for residential or commercial ceiling remodels.
● In stock
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Key features
- Airtight housing – prevents air leakage for energy-efficient installs.
- IC rating – safe direct contact with insulation.
- 45° sloped-ceiling design – fits angled ceilings up to 45 degrees.
- 6-inch opening – accommodates standard recessed lamps.
- Aluminum construction – lightweight yet durable for long life.
- New-construction ready – includes mounting brackets for fresh builds.
Pros
- +Airtight sealing improves energy efficiency.
- +IC rating allows safe insulation contact.
- +Aluminum frame resists corrosion and lasts long.
Cons
- −Designed primarily for new construction; retrofits may need extra work.
- −Only compatible with 6-inch recessed fixtures.
About P645-AT 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing
What is P645-AT 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing?
The P645-AT is a 6-inch recessed lighting housing designed specifically for sloped ceilings pitched up to 45 degrees. Part of the Recessed Housing collection from Progress Canada, it's a new-construction can light meant to be nailed into ceiling joists before drywall goes up, delivering an airtight seal and an IC rating so it can sit in direct contact with insulation.
Key features
- Sloped ceiling geometry — angled trim plate accommodates ceiling pitches up to 45 degrees, keeping the light aimed straight down rather than out at an angle.
- Air-tight construction — gasketed housing limits conditioned air loss into the attic, an important detail for energy code compliance in many jurisdictions.
- IC rated — safe to bury directly in batt or blown-in insulation without leaving the required clearance non-IC cans demand.
- 6-inch aperture — fits the most common size of recessed trims, baffles, and reflectors, giving you wide flexibility on the finish layer.
- New-construction frame — integrated bar hangers and mounting brackets attach to joists or T-bar before the ceiling is closed in.
- Pre-wired junction box — built-in J-box with multiple knockouts simplifies rough-in for electricians running standard household wiring.
- Code-oriented build — engineered to meet the safety expectations electrical inspectors look for on sloped, insulated ceiling installations.
Who is P645-AT 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing for?
This housing is built for licensed electricians, general contractors, and serious DIY builders working on new homes, additions, or full renovations where the ceiling is open. It's especially useful in great rooms, lofts, vaulted bedrooms, and finished attics where flat-ceiling cans simply won't sit correctly. Skill level is intermediate to professional — you need to be comfortable framing, wiring, and coordinating placement before drywall.
How does P645-AT 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing compare?
Compared with standard flat-ceiling new-construction cans, this unit is the right choice any time the ceiling has meaningful pitch — a flat housing on a slope leaves the lamp pointing awkwardly across the room instead of down. Versus remodel-style sloped housings that clip into existing drywall, the new-construction frame is sturdier and easier to position precisely, but it has to go in before the ceiling is finished. And against non-airtight or non-IC alternatives, this one keeps more options open for tight insulation packages and stricter energy codes.
Best use cases
- →Installing LED downlights in sloped ceilings of new homes.
- →Commercial office lighting where insulation contact is required.
- →Wet-area lighting in bathrooms with sloped ceilings.
Is 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing right for you?
Buy this housing if you are installing lighting on a sloped ceiling in a new residential or commercial build. It suits professionals and confident DIYers who understand basic wiring and framing. Alternatives include standard rectangular housings (non-IC) or plastic sloped housings, but they lack the airtight seal and durability of the P645-AT.
How it compares: Compared with standard rectangular housings, the P645-AT adds a 45° sloped design, IC certification, and airtight sealing. It outperforms generic plastic housings in durability and moisture resistance, though it is optimized for new-construction rather than retrofit projects.
More from Starlight Lighting
Frequently Asked Questions
What does IC rating mean for this housing?
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IC rating indicates the housing can safely touch insulation without causing a fire, meeting NEC requirements for direct insulation contact in lighting installations.
Does the housing work in existing homes with angled ceilings?
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Yes, it fits sloped ceilings up to 45 degrees, but older homes may require additional framing to achieve a proper airtight seal.
How is the airtight seal achieved?
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The housing includes a molded gasket and precision-machined aluminum edges that compress against the ceiling joist, preventing air movement through the fixture opening.
Is this housing compatible with LED fixtures?
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It is fully compatible with standard 6-inch LED recessed lamps, providing the same thermal performance and light output as traditional incandescent fixtures.
Can I use this housing in wet locations?
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While the housing itself is moisture-resistant, it should be paired with a wet-rated LED lamp and installed according to local code for wet-area applications.
How much does 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing cost?
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6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing is $149.88 at Starlight Lighting. Prices may change — click through to Starlight Lighting for the latest.
Is 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing in stock at Starlight Lighting?
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Yes, 6`` 45 New Construction Air-tight & IC Sloped Ceiling Housing is currently in stock at Starlight Lighting.
Specifications
- Brand
- P645-AT
- SKU
- 157301