Dura Plastics - 15" Jumbo Valve Box Extension

The Dura Plastics 15" Jumbo Valve Box Extension offers durable protection for in-ground irrigation system components. Designed for residential, commercial, and golf course use, it helps keep valves secure, clean, and dry from weather and debris while allowing easy maintenance access.

Construction & Durability:

• Made from high-strength plastic with excellent chemical resistance
• UV-stabilized material for long-term outdoor use
• Static vertical load rated for light duty pedestrian use (SCTE standard)
• Tensile strength: 2,700–4,400 PSI for enhanced impact durability

Performance & Functionality:

• Water absorption is less than 1% for consistent dry interior
• Deflection temperature at 66 PSI: 150–200°F ensures thermal stability
• Electrical dielectric strength: 400–600 V/mil for safe installation near utilities

Ease of Installation & Use:

• Extension design integrates seamlessly with standard 15" x 21" valve boxes
• Includes green lid and black body for quick identification and blend-in appearance
• Lightweight yet durable for quick placement in non-vehicular traffic areas

Technical Specifications:

• Product Dimensions: 15" x 21", 6" deep
• Color: Black body with green lid
• Material: UV-resistant, high-strength plastic
• Load Rating: SCTE – Light Duty, Pedestrian
• Tensile Strength: 2,700–4,400 PSI
• Flexural Modulus: 140,000–240,000 PSI
• Impact Strength (Notched Izod): 0.5–3.0
• Deflection Temp @ 66 PSI: 150–200°F
• Density: 0.950–0.965
• Electrical Dielectric Strength: 400–600 V/mil
• Water Absorption: <1% weight change
• Chemical Resistance: Yes

Installation & Application:

• Recommended Uses: Residential, commercial, parks, and golf courses
• Installation Method: Buried in-ground, fits standard valve box setups
• For use in non-vehicular traffic areas

Compatibility & Optional Accessories:

• Compatible with Dura Plastics 15" x 21" valve boxes
• Can be used with various lid color options (green, black, purple, tan)