SKU: 8133931060

Steel Joist - 12" x 20 Ft - 3½" (89mm) Thickness- Galvanized G90 - Gauge 18

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Description

Steel Joist - 12" x 20 Ft - 3½" (89mm) Thickness- Galvanized G90 - Gauge 18Introduction Open Joist made out of Galvanized Steel. Designed to be used as floor joists or flat roof joists. It can aslo be used for balconies and terrases. Specifications: Steel Gauge 18, Thickness = 1. 2mm Model Number: G18 B89 H11 L20 G90 DL15 LL40 G90 Galvanized Steel Grade 50 Steel Height = 11" (301. 625mm). Total Dead Load = 15 PSF (0. 7182 KPa) + Self Weight. Total Live Load = 40 PSF (1. 9152 KPa). Net Span = 20 Ft (6096mm). Allowable

Introduction

Open Joist made out of Galvanized Steel. Designed to be used as floor joists or flat roof joists. It can aslo be used for balconies and terrases.

Specifications:

  1. Steel Gauge 18, Thickness = 1.2mm
  2. Model Number: G18-B89-H11⅞-L20-G90-DL15-LL40
  3. G90 Galvanized Steel
  4. Grade 50 Steel
  5. Height = 11⅞" (301.625mm).
  6. Total Dead Load = 15 PSF (0.7182 KPa) + Self Weight.
  7. Total Live Load = 40 PSF (1.9152 KPa).
  8. Net Span = 20 Ft (6096mm).
  9. Allowable Deflection L/480.
  10. Distance between Joists = 16" (406.4mm).
  11. Designed and manufactured in compliance with CSA S136 and AISI S100.

Galvanized Steel Stud Details

The Studs used in building this open web joists is made of Glavanized Steel. It has an 89x38mm (3½x1½") section and is available in multiple thicnesses and steel grades. for this Joist, Stud Model Number is: ILD-350S150-18-50-G90.

 

Installation

Also Beam can be supported by Beam Hanger.

Data Sheet:




 

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 8133931060

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4.4 ★★★★★
Based on 13 reviews
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S
Verified Purchase
Sam
Houston, US
★★★★★ 5
It's a chunk of wood! Perfect.
Color: Black Walnut
It's a chunk of wood! Finish is great, height is great, looks great. Easy to clean unlike foam ones. I did get one that was warped but the replacement was fine. Just check that it's actually flat when you get it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2025
P
Verified Purchase
498pgadi
Lowell, US
★★★★★ 4
Decent product. Fits perfectly for 61/64 keys. Just slightly short for 68.
The finish seems fine for the piece I received. Didn't get any splinters or rough edges. Treated it with mineral oil overnight, it now touches and smells great. Just slightly too short for 68 layout but really can't complain for the price. Wish they offer more width options for TKL and full size as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2022
J
Verified Purchase
John Choi
Boise, US
★★★★★ 5
Worth it.
Color: Black Walnut
Looks nice. Very solid. Gets the job done.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
T
Verified Purchase
To Buy or Not to Buy
Chelsea, US
★★★★★ 1
Warped Wood
Color: Black Walnut
I know it's inexpensive, but regardless of the price of an item, it should do what it's meant to do somewhat effectively. The wood was warped and did not sit flat on my desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2025
A
Verified Purchase
Alexander R. H. Latouf
Birmingham, US
★★★★★ 3
Great wrist rest, advertised dimensions slightly inaccurate.
Color: Black Walnut
Perhaps this is nitpicky but I purchased this wrist rest because it was perfectly sized to my keyboard at 29cm wide. It got here, and it's a fine wrist rest in terms of quality, material and feel, but it's not 29cm wide, it's 30.5cm wide. The other dimensions are accurate enough - both only .1mm off, but the mismatched width against my keyboard is enough for me to notice it and obsess over it. If that doesn't bother you, I say go for it. At $15 it's a good deal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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