Aluminum Fence & Rail

Aluminum fencing delivers the classic look of wrought iron without the rust, weight, and ongoing maintenance. NMI Fence Supply carries a full range of ornamental aluminum fence panels, posts, gates, and railing systems in residential, commercial, and industrial grades — all backed by manufacturer warranties and available at wholesale contractor pricing.

Understanding Aluminum Fence Grades

Aluminum fencing is manufactured in three primary grades, each designed for specific applications:

• Grade B (Residential) — 5/8" pickets with 1" x 1" rails. Suitable for residential properties, decorative boundaries, and light-duty enclosures. Typical picket spacing: 3-5/8" on center.
• Grade C (Commercial) — 3/4" pickets with 1-1/4" x 1-1/4" rails. Designed for commercial properties, HOA communities, parks, and institutional settings requiring added durability.
• Grade A (Industrial) — 1" pickets with 1-3/4" x 1-3/4" rails. Heavy-duty construction for industrial facilities, high-security perimeters, and government properties.

Powder Coating and Finishes

All aluminum fence panels are electrostatically powder coated for a durable, fade-resistant finish. Standard colors include black, bronze, white, and hunter green. The powder coating is applied after fabrication and cured at high temperature, creating a finish that resists chipping, peeling, and UV degradation. Premium manufacturers offer 20-year or lifetime warranties on their powder coat finishes.

Pool Code Compliance

Aluminum fence is the most popular choice for pool enclosures because it meets BOCA pool code requirements when configured correctly. Pool code panels feature a maximum picket spacing of 1-3/4" (preventing a 4" sphere from passing through), no climbable horizontal rails, and self-closing/self-latching gate hardware. Always verify local code requirements, as some jurisdictions enforce stricter standards.

Racking vs. Stair-Stepping

When installing aluminum fence on a slope, you have two options. Racking adjusts the pickets within the panel frame to follow the grade — this creates a clean, parallel-to-ground appearance. Most panels can rack up to a 12-inch rise over an 8-foot span. For steeper slopes, stair-stepping maintains level panels with gaps underneath, which are filled with additional pickets or left open depending on the application.

Spear Top Styles and Gate Options

Aluminum fence panels are available in a variety of spear top designs: pressed point, trident, quad flare, ring top, and flat top. Flat top panels are required for pool code compliance and are popular for modern architectural styles. Gate options include single swing, double swing, sliding, and cantilever configurations with matching spear tops and hardware. For post layout recommendations, see our fence post spacing guide.