4 Inch Square Pole Tenon Adapter | 2 3/8 Inch Tenon | Bronze

Product Overview

This 4 Inch Square Pole Tenon Adapter is designed to mount lighting fixtures with a 2 3/8 inch tenon interface onto standard 4 inch square steel or aluminum poles. The adapter provides a secure and stable mounting point for post top luminaires and architectural site lighting heads. The bronze finish matches common pole and fixture colors used in exterior site lighting projects.

Typical use includes adapting square poles for post top fixtures in parking lots, pedestrian areas, and architectural site lighting layouts. The adapter is suitable for both new installations and retrofit scenarios where a tenon mount is required on an existing square pole.

Core Performance and Output

This adapter is engineered to provide a rigid and stable tenon mounting point for fixtures up to the weight and EPA limits of standard 4 inch square poles. The 2 3/8 inch tenon is compatible with most post top and area lighting heads designed for slipfitter or tenon mounting. Structural performance is determined by the pole?s capacity and the fixture?s weight and wind load.

The adapter does not alter the pole?s wind load rating but ensures the fixture is properly supported and aligned. Excessive fixture weight or EPA beyond the pole?s rating can compromise stability. Always verify pole and fixture compatibility before installation.

Adjustability and Control Options

This tenon adapter provides a fixed 2 3/8 inch round tenon for direct mounting of compatible fixtures. No tilt or rotational adjustment is provided by the adapter itself; fixture aiming is determined by the slipfitter or mounting hardware on the luminaire.

No integrated control options are included. All fixture controls, sensors, or photocells must be specified at the fixture level.

Longevity and Reliability

The adapter is constructed from durable materials suitable for outdoor use. The bronze finish provides corrosion resistance in typical site lighting environments. Mechanical fastening to the pole ensures long-term stability under normal wind and weather conditions.

Routine inspection of mounting hardware is recommended as part of standard pole and fixture maintenance. The product includes a 1 year warranty covering material and manufacturing defects.

Build Quality and Physical Characteristics

The adapter is fabricated for precise fitment to 4 inch square poles. The 2 3/8 inch tenon is sized for standard slipfitter and post top fixture mounts. The bronze powder coat finish is UV resistant and matches common site lighting hardware.

All mounting hardware should be installed to manufacturer torque specifications to maintain structural integrity. The adapter is designed for use with steel or aluminum poles with compatible wall thickness and structural ratings.

Where This Product Fits Best

This tenon adapter is intended for exterior site lighting environments where 4 inch square poles are used and a tenon mount is required for fixture installation. It is commonly deployed in:

• post top lighting
• architectural site lighting
• pedestrian area lighting
• decorative outdoor lighting
• park lighting
• campus lighting
• pathway lighting
• municipal decorative lighting

The adapter is suitable for outdoor locations exposed to weather, including parking lots, walkways, and landscaped areas. It is not intended for use in marine, hazardous, or corrosive environments without additional protection.

Installation and Long-Term Use

The adapter mounts directly to the top of a 4 inch square pole using standard hardware. Installation requires access to the pole top and may require drilling or tapping depending on pole design. All fasteners should be tightened to recommended torque values to prevent loosening under wind load.

Long-term use depends on proper installation and periodic inspection. Inspect for corrosion, loose hardware, or fixture misalignment during routine maintenance. The adapter is designed for permanent installation and does not require regular adjustment.

How This Fixture Is Commonly Used

In typical deployments, the adapter is installed at the top of a 4 inch square pole to provide a tenon mount for post top or area lighting fixtures. Mounting height is determined by the pole length, commonly ranging from 10 to 20 feet for pedestrian and site lighting applications.

Spacing and layout are dictated by the lighting design and fixture output. Using a tenon adapter allows for quick replacement or upgrade of fixtures without modifying the pole. If heavier or larger fixtures are used, verify that the pole and adapter combination meets all structural requirements.

Safety, Certifications, and Warranty

This adapter is intended for use with listed and certified lighting fixtures. All installations must comply with local codes and standards for pole-mounted lighting. The product includes a 1 year warranty against defects in materials and workmanship.

No additional safety certifications are claimed for this accessory. Always follow proper lockout and safety procedures during installation and maintenance.

Frequently Asked Questions

Q: What fixture types are compatible with the 2 3/8 inch tenon?

A: Most post top, area, and site lighting fixtures designed for slipfitter or tenon mounting will fit a 2 3/8 inch tenon.

Q: Can this adapter be used on aluminum poles?

A: Yes, it is compatible with both steel and aluminum 4 inch square poles, provided the pole meets structural requirements.

Q: Does the adapter include mounting hardware?

A: Mounting hardware is not included. Use hardware specified for the pole and fixture combination.

Q: What is the maximum fixture weight this adapter can support?

A: The adapter?s capacity is determined by the structural rating of the pole. Always verify the pole?s weight and EPA limits before installation.

Q: Is the bronze finish suitable for coastal environments?

A: The bronze finish provides standard corrosion resistance but is not rated for marine or highly corrosive environments.

Q: How often should the adapter be inspected?

A: Inspect during routine pole and fixture maintenance, typically once per year or after severe weather events.

Q: Can this adapter be used for multiple fixtures on one pole?

A: This adapter is designed for single fixture mounting. For multiple fixtures, use a multi-arm or cross-arm adapter designed for that purpose.

Application Questions and Clarification

Q: Is this adapter suitable for decorative post top lighting in municipal parks?

A: Yes, it is commonly used for post top and decorative lighting in parks, campuses, and pedestrian areas with 4 inch square poles.

Q: Can this adapter be used for pathway lighting on a campus?

A: Yes, it is suitable for pathway and campus lighting applications where a tenon mount is required on a square pole.

Q: Is this adapter compatible with architectural site lighting heads?

A: Yes, most architectural site lighting heads designed for 2 3/8 inch tenon mounting are compatible with this adapter.

Q: Are there any restrictions on mounting height for this adapter?

A: Mounting height is determined by the pole and fixture design. The adapter itself does not limit mounting height, but always confirm pole structural capacity at the intended height.