SKU: 46375532968

Armstrong Ceilings Prelude ID White 20-Pack 144-in Galvanized Steel Ceiling Grid Main Beam

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Description

Armstrong Ceilings Prelude ID White 20-Pack 144-in Galvanized Steel Ceiling Grid Main BeamPrelude 144 in Heavy Duty Ceiling Grid Main Beam (20 pack) Install suspended ceilings with Armstrongs Prelude heavy duty main beam. Each 144 inch beam is made from hot dipped galvanized steel with a 15 16 inch exposed tee and engineered SUPERLOCK clip for fast, secure alignment in commercial or residential spaces. Key Features: Heavy Duty Construction: Hot dipped galvanized steel resists corrosion for long term durability Secure SUPERLOCK Clip:

Prelude 144-in Heavy-Duty Ceiling Grid Main Beam (20-pack)

Install suspended ceilings with Armstrong’s Prelude heavy-duty main beam. Each 144-inch beam is made from hot-dipped galvanized steel with a 15/16-inch exposed tee and engineered SUPERLOCK clip for fast, secure alignment in commercial or residential spaces.


Key Features:

  • Heavy-Duty Construction: Hot-dipped galvanized steel resists corrosion for long-term durability
  • Secure SUPERLOCK Clip: Audible click confirms fast, accurate alignment during installation
  • 15/16-in Exposed Tee: Compatible with PRELUDE 15/16-in grid systems and 24x24 or 24x48 panels
  • Carton Efficiency: 20-piece pack streamlines medium to large projects
  • Code-Compliant: Designed to meet building codes for residential and non-residential applications

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Duty Rating Heavy Duty
Material Hot-dipped galvanized steel
Package Quantity 20 pieces
Beam Length 144 in
Exposed Tee Width 15/16 in
Suspension Type Main Beam
Clip Type SUPERLOCK
Disinfectable Fog, spray, and wipe
Seismic Rating DEF
Rout/Slot Spacing 6 in
Hanger Spacing (4 ft) 16.73 plf
Hanger Spacing (5 ft) 8.73 plf
Sustainable Yes
Color White (also available in multiple colors)

Frequently Asked Questions (FAQ):

Q: Can I install this myself?
A: Yes, if you have experience with suspended ceilings; follow Armstrong’s installation instructions and video.


Q: Do materials need to acclimate before install?
A: Yes. Unpack and allow 24 hours of acclimation in the installation environment.


Q: What overhead clearance is required?
A: A minimum of 3 inches is recommended for grid installation.


Q: What components are included in a typical grid system?
A: Main beams, wall moldings, cross tees, and hanger wires (sold separately).


Q: Is the grid disinfectable?
A: Yes. It is fog, spray, and wipe disinfectable as specified by Armstrong.


Streamlined Structure, Modern Polish

Prelude’s crisp 15/16-inch lines bring tailored rhythm to a room, framing ceiling panels with refined precision. The galvanized steel beam’s SUPERLOCK detail is a quiet hero—clean seams and confident alignment. Pair it with sleek white acoustical tiles and linear lighting to elevate offices or studios with effortless order. This main beam is a subtle essential for spaces that demand luxury and performance in equal measure.


Upgrade your ceiling project with Prelude’s heavy-duty, easy-align main beam—order the 20-pack today for fast, professional results.

Warranty

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46375532968

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c.jahelka
Battle Creek, US
★★★★★ 4
Nice boot!!
Size: 8.5, Color: Black
Very comfortable. Built well and obviously high quality. Fits a little big, about a size larger. They are a little thinner/cooler than the Danner Wildland and Haix Missoula. They do not have any NFPA rated tags or labels on the boot. Will upgrade the laces. Would love to see the boa system on this boot!
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Reviewed in the United States on January 2, 2020
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 2
Needs work
Size: 12, Color: Black
I’m disappointed that I spent almost 400$ on a pair of boots and wore them for 3 days and both boot laces broke near the eyelets. As a wildland firefighter I need to be able to rely on my boots.
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Reviewed in the United States on November 6, 2020
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Verified Purchase
Average G
Draper, US
★★★★★ 5
Like all Asics I've owned - Good
Size: 12 X-Wide, Color: Steel Grey/Cloud Grey
I've worn Asics for about 35 years now. Every pair I've had, and there have been many, have fit well and gotten the job done. The Gel-Venture 11 are performing as expected which is very well. The cushioning and support in the heel and arch are excellent. Very comfortable to walk and run in these shoes. Finally, and less importantly, the looks are just OK. The cheap "iron on" Asics logo doesn't look good. I've been purchasing Asics for as long as I have strictly for the performance quality anyway.
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Reviewed in the United States on April 28, 2026
O
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Oldbutfast
Houston, US
★★★★★ 5
Nice, sturdy trail running and walking shoes
Size: 9.5, Color: Midnight/Grey Blue
I like Asics athletic shoes. They consistently fit my feet quite well. These shoes seem sturdy and have good grippy tread, ideal for light hiking, trail running and general every day use. Comfortable. My only gripe about Asics is the tread on previous shoes seems to wear out quickly. I walk and hike about 35-40 miles a week and the past Asics I’ve had usually lose their rear tread after six months so maybe that is normal.
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Reviewed in the United States on May 4, 2026
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Glenn
Boise, US
★★★★★ 5
Very comfortable
Size: 9.5, Color: Black/Cool Grey
Awesome shoe, very comfortable. As a trail shoe it is a little firmer than a running sneaker as expected. The unexpected was the comfort the shoe provided. Nice looking as well. I've been wearing against most of my life. Always find myself coming back to them when I tried other brands. Size consistency has always been near perfect.
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Reviewed in the United States on May 31, 2026

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