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Plain Square Bonderized Steel Downspout Strap | K&M Sheet Metal K&M Sheet Metal plain square bonderized steel downspout strap in 24 gauge, regular size and pre bent, for attaching downspouts to walls; Made in the USA. ST0021-32
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Plain Square Bonderized Steel Downspout Strap

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$ 7.15 7.15 USD $ 7.15
$ 5.85
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Material: 24 Gauge Bonderized Steel
Terms and Conditions
30-day money-back guarantee

Estimated Processing Time: ~7 Days
Based on recent orders. This is the approximate time required to prepare this product for shipment or local pickup. Shipping transit time is not included.
Available to Order — Item on display in store

This product is available for custom ordering. Representative profiles and finishes are available to view at our showroom. Your selected size, material, or color may not be physically displayed. Manufacturing and pickup times vary by product configuration.

Standard Plain Square Bonderized Steel Downspout Strap

Available in 24 Gauge G90. Downspout wall attachment.

Downspout straps come flat or pre formed to fit one of our standard downspouts. The standard leg length is for a flush to 1" downspout offset from the wall (depending on how much is bent for the leg portion) however, if a longer length is needed please select the larger version.
The legs on these downspout straps do not come pre bent at the wall location to allow you to adjust the length depending on your installation.
At least two downspout straps are required for every 10 feet of downspout. Three are usually sufficient for a straight 20' foot run.
For a 10 foot run, place a strap approximately 1' from the bottom and another 1' from the top. For a 20' foot run, use the same adding a strap right at the seam between the 2 downspouts, which also hides the seam giving it the appearance of a continuous length.
Custom colors, sizes and materials are available as custom items. Please, contact us for a quote.

Size A B C F / Stock Size
2"x3" / 3"x3" 3.125" 5.437" 1.562" 14"
2"x3" / 3"x3" Large 3.125" 7.437" 1.562" 18"
3"x4" / 4"x4" 4.125" 5.937" 1.562" 16"
3"x4" / 4"x4" Large 4.125" 7.937" 1.562" 20"
4"x5" / 5"x5" 5.125" 7.437' 1.562" 20"
4"x5" / 5'x5" Large 5.125" 9.437" 1.562" 24"
4"x6" / 6"x6" 6.125" 7.937" 1.562" 22"
4"x6" / 6"x6" Large 6.125" 9.937" 1.562" 26"

About Bonderized

  • Bonderized steel is made with G90 Galvanized Steel that receives a phosphate bath, then a layer of Chromate. It is then dried, leaving it ready to accept paint.
    Bonderized has a dull gray colored finish. It is meant to and it must be painted in order to avoid quick rusting.

Submittals & Downloads

PDF - Plain Square Downspout Strap

Color and Material Options

Unpainted Stocked Materials

Bonderized Steel

Bonderized Steel

Copper

Copper

Freedom gray

Freedom Gray

Galvalume

Galvalume Plus

Galvanized Steel

Galvanized Steel

Lead coated copper

Lead Coated Copper

Mill finish aluminum

Mill Finish Aluminum

Stainless steel

Stainless Steel

More Information

Bonderized Steel: Also known as Paint Grip. Offered in 26 gauge G90. 24 gauge available as special order.

Copper is commonly stocked in 3′ x 10′ and 4’x10′ sheets, 11.75″, 15″ 18″, 20″, 24″ (16 oz. or 20 oz.) and 36″ coil (16 oz.). 24 oz. and 32 oz. are available in 3′ x 10′ sheets. Our typical stock is 1/8 to 1/4 hard copper, supplied by Aurubis, Hussey and Revere.
We also stock 1″ x 3/16″ x 12′ bar stock. Other sizes as well as 48 oz. copper are available as special order items.

Freedom Gray is commonly stocked in 3′ x 10′ sheets of 16 oz. and 20 oz. Coils are available as a special order item with a 1000 lb. minimum. Freedom gray is a Tin / Zinc coated copper from Revere Copper.

Galvalume Plus is an Acrylic coated metal, also known as Acrylume. K&M utilizes Acrylume E Plus™ supplied by US Steel.

Galvanized Steel: Offered in 26 gauge G90. 24 gauge available as special order.

Lead Coated Copper is commonly stocked in 3′ x 10′ sheets of 16 oz. and 20 oz. Special order items include 3′ x 8′ sheets and 12″, 15″, 18″, 20″ and 24″ coil stock. A minimum of 1000 lbs. is required for a coil order.

Mill finish Aluminum is commonly stocked in 4′ x 10′ sheets of 0.032″ and 0.040″.

Stainless Steel in normally available in 24 and 26 gauge 4′ x 10′ sheets, 304 alloy 2B finish. Other thickness, and finishes such as #4, #8 and 2D available as special order items.

Downloads / Color Charts

 PDF – Acrylume E Plus Coated Sheet Steel (Data Sheet)
 PDF – Aluminum – Alcoa (SDS)
 PDF – Copper (ASTM B370 Building Spec Sheet)
 PDF – Copper – Revere (Spec Sheet)
 PDF – Copper – Revere (MSDS)
 PDF – Freedom Gray Copper – Revere (Spec Sheet)
 PDF – Lead Coated Copper (ASTM B101 02 Building Spec Sheet)
 PDF – Stainless Steel – Outokumpu (Data Sheet)

 PDF – Expanded Aluminum Metal Flattened
 PDF – Expanded Copper Metal Flattened

Looking for a custom color not listed? Please EMAIL your request with all information including the metal manufacturer for a quote.

Other colors, materials and thickness may be available upon request. Colors displayed for reference only.
Please click here for a full selection of colors and materials offered.