Eaton Crouse-Hinds 1-1/2" Knockout Snap-in Blank, Rigid/IMC

Eaton Crouse-Hinds 1-1/2" Knockout Snap-in Blank

Professional-Grade Knockout Sealing for Rigid and IMC Conduit Systems

The Eaton Crouse-Hinds 1-1/2" Knockout Snap-in Blank is a professional-grade knockout seal engineered for reliable closure of unused conduit openings in electrical enclosures. This precision-manufactured blank delivers secure sealing and maintains enclosure integrity for commercial and industrial electrical installations.

Key Features & Benefits

Secure Knockout Sealing

• Snap-in Design - Quick, tool-free installation reduces labor time and ensures proper fit
• Positive Retention - Secure locking mechanism prevents accidental removal or displacement
• Professional Appearance - Clean, finished look maintains enclosure aesthetics
• Tamper Resistant - Once installed, provides reliable long-term closure

Enclosure Protection

• Maintains NEMA Ratings - Preserves original enclosure protection levels
• Prevents Contamination - Blocks dust, moisture, and debris entry
• Code Compliance - Meets NEC requirements for unused opening closure
• Durable Construction - Engineered for decades of reliable service

Installation Efficiency

• No Tools Required - Simple snap-in installation from inside enclosure
• Perfect Fit - Precision-sized for standard 1-1/2" trade size knockouts
• Reversible Design - Can be removed if opening needed later
• Contractor Preferred - Trusted by electrical professionals for over 100 years

Technical Specifications

This knockout blank is designed for 1-1/2" trade size openings in rigid and IMC conduit systems. The precision-molded construction ensures consistent fit across various enclosure manufacturers while maintaining the original NEMA rating of the enclosure. Compatible with standard knockout punches and designed for ordinary/non-hazardous locations, this blank meets all applicable NEC and CEC requirements for unused opening closure.

Installation Process

1. Verify knockout opening is clean and free of burrs or debris
2. Position blank from inside of enclosure, aligning with knockout opening
3. Press firmly until snap-in mechanism engages with audible click
4. Verify blank is fully seated and flush with enclosure surface
5. Test retention by gently pulling on blank from outside
6. Document installation for future reference if opening may be needed

Applications

Perfect for:

• Commercial Electrical Panels - Office buildings, retail centers, hospitals
• Industrial Control Enclosures - Manufacturing facilities, processing plants
• Motor Control Centers - Unused conduit entries in MCC sections
• Distribution Panels - Electrical rooms and utility spaces
• Junction Boxes - Large enclosures with multiple knockout options
• Switchgear Applications - High-voltage distribution equipment
• Municipal Infrastructure - Schools, government buildings, public facilities
• Outdoor Enclosures - Weather-resistant installations requiring sealed closures

Knockout Sealing System Benefits

Proper knockout sealing is essential for maintaining enclosure integrity and code compliance. Unlike makeshift solutions or temporary covers, professional knockout blanks provide permanent, reliable closure that preserves the original NEMA rating of the enclosure. This ensures continued protection against environmental hazards while maintaining the professional appearance required in commercial and industrial installations.

Why Choose Snap-in Design?

The snap-in design eliminates the need for screws, nuts, or other hardware that can be lost or require tools for installation. This innovative approach reduces installation time while providing superior retention compared to friction-fit alternatives. The reversible design allows for future modifications without damaging the enclosure, making it the preferred choice for electrical contractors who value both efficiency and long-term flexibility.

CRS-339 - spec sheet