Use with 5-inch K-style gutters. Spans the interior of a standard residential 5K gutter from front lip to back edge. Most common residential size.

Use with 5-inch gutters that have a slightly wider interior profile, or half-round gutters requiring a longer span. Measure your gutter interior to confirm.

Use with 6-inch K-style (6K) gutters. Commercial and high-capacity residential installations. Pairs with an 8-inch gutter spike.

Always measure the interior width of your gutter from the inside face of the front lip to the inside face of the back wall. The ferrule should fit with no more than 1/8″ of play.

Gutter run (ft) ÷ 2 = ferrules needed
100 ft → 50 ferrules

Gutter run (ft) ÷ 1.33 = ferrules needed
100 ft → 75 ferrules

• At 24″: ~1,000 linear feet
• At 32″: ~1,333 linear feet
• At 16″: ~667 linear feet

Add 10–15% to your calculated count for corners, end adjustments, and damaged units. Round up to the next full box to avoid mid-job shortages.

"Ordered the 500-box of 4-1/2″ aluminum. Dimensions are consistent, they fit our 5K gutter stock perfectly, and the bulk pricing makes them cost-effective for our crew. Will reorder."

Marcus T. — Verified Contractor Purchase

"Needed copper ferrules to match a copper gutter restoration job. GutterAll had them in stock as singles — every other supplier wanted a 500-box minimum. Fast local pickup at Damascus."

Diane R. — Verified Purchase

"Good quality steel ferrules for a commercial job where we wanted extra rigidity. Uniform dimensions, no burrs on the cut ends. The 500-box had accurate count — we verified a sample."

Ben S. — Verified Contractor Purchase

What size ferrule do I need for my gutters?

Match the ferrule length to your gutter width: use 4‑1/2″ ferrules for 5-inch K-style gutters, 5″ ferrules for slightly wider 5-inch profiles, and 6″ ferrules for 6-inch K-style gutters. The ferrule must span the full interior width from front lip to back edge. When in doubt, measure the gutter interior directly — a ferrule even 1/4″ short will not provide adequate structural support.

What is the difference between aluminum, steel, and copper ferrules?

Aluminum ferrules are recommended for aluminum gutter systems — lightweight, corrosion-resistant, and cost-effective. Steel ferrules offer higher rigidity for commercial or high-load applications. Copper ferrules are required for copper gutter systems to prevent galvanic corrosion — never pair copper gutters with aluminum or steel ferrules, as the dissimilar metals corrode rapidly in the presence of moisture.

How many ferrules do I need per linear foot of gutter?

At standard 24″ spacing: gutter run (ft) ÷ 2 = ferrules needed. At heavy-load 16″ spacing: gutter run (ft) ÷ 1.33 = ferrules needed. A 500-count box covers approximately 1,000 linear feet at 24″ spacing. Always add 10–15% buffer for corners and end adjustments.

Can ferrules be used with hidden hangers?

No. Ferrules are designed exclusively for spike-and-ferrule hanger systems. Hidden hangers use a bracket that clips inside the gutter lip and is fastened to the fascia with a screw — no ferrule is involved. If you are installing a new system, GutterAll's 6K Hidden Hangers with Screw are a modern alternative that eliminates ferrules entirely.

What spike length pairs with each ferrule size?

Use a 7″ spike with 4‑1/2″ and 5″ ferrules; use an 8″ spike with 6″ ferrules. The spike must penetrate at least 1‑1/2″ into solid wood — ideally a rafter tail. Driving into fascia only without hitting a rafter provides significantly less holding strength and is not recommended for long-term installations.

Is local pickup available at the Damascus, OR location?

Yes. Local pickup is available at 19759 SE Sunnyside Rd, Damascus, OR 97089, Monday–Friday 8am–4pm Pacific Time. Call (503) 496-7017 ahead to confirm stock on the specific size and material variant you need, particularly for the 500-count bulk boxes.

Consistent Dimensions

Each ferrule is manufactured to consistent length and diameter tolerances. Dimensional variance across a 500-box is minimal, ensuring reliable fit across every hanger location on a job.

Contractor Pricing

Volume discounts are available for orders above 10 boxes. Contact (503) 496-7017 or sales@gutterall.com to set up a contractor account.

All Three Materials Stocked

Aluminum, steel, and copper ferrules in all three sizes are stocked at the Damascus, OR warehouse with 282,830+ units on hand — ready for same-day pickup or 1–2 day ship.

Expert Support

Our team has hands-on gutter installation experience. Call or text (503) 496-7017 Mon–Fri 8am–4pm PT with sizing or material selection questions.