Hager 742S-V 36" Automatic Door Bottom with Vinyl Insert for Hollow Metal Doors

Hager 742S-V 36" Automatic Door Bottom with Vinyl Insert for Hollow Metal Doors

Concealed Automatic Door Bottom Solution

The Hager 742S-V automatic door bottom is specifically designed for hollow metal door applications, featuring a vinyl insert and milled aluminum finish. This 36" unit measures 1-3/8" width by 3/4" height and is engineered to be completely concealed within the bottom channel of hollow metal doors. UL listed with fire rating certification, this professional-grade door bottom provides reliable sealing performance for commercial applications.

Professional Features & Benefits

• Concealed Installation Design: Completely hidden within the bottom channel of hollow metal doors for clean, professional appearance without visible hardware.
• Precision Sizing: 36" length with 1-3/8" width and 3/4" height dimensions engineered for optimal fit in standard hollow metal door channels.
• Flexible Length Options: Can be trimmed up to 3" for doors between 36" and 48" to ensure perfect fit for various door widths.
• Durable Vinyl Insert: High-quality vinyl sealing element provides effective barrier against air, sound, and moisture infiltration.
• Fire-Rated Construction: UL listed design meets fire safety requirements for commercial door applications requiring code compliance.
• Milled Aluminum Finish: Corrosion-resistant aluminum construction with milled finish provides long-lasting durability and professional appearance.
• Complete Hardware Package: Includes #6 x 5/8" pan head sheet metal screws for secure mortise installation.
• Five-Year Warranty: Manufacturer warranty coverage provides confidence and protection for commercial installations.

Technical Specifications

• Commercial/Residential: Commercial
• Fasteners: #6 x 5/8" Pan head sheet metal screws furnished with mortise types Finishes MILFire Rating ULListed Inserts Vinyl Length 24" to 60" Notes The 742S is designed to be completely concealed in the bottom channel of hollow metal doors Furnished exact length as stated. 36"-48" can be trimmed up to 3" Do not trim device wth length of 24" All other sizes can be trimmed up to 1" Product Description Automatic Door Bottom Hollow Metal Door Application Size Width: 1-3/8" (34.93 mm) Height: 3/4" (19.1 mm) Warranty Five-Year Warranty
• Finishes: MIL
• Fire Rating: UL Listed
• Inserts: Vinyl
• Length: 24" to 60"
• Notes: The 742S is designed to be completely concealed in the bottom channel of hollow metal doors; Furnished exact length as stated.; 36"-48" can be trimmed up to 3"; Do not trim device wth length of 24"; All other sizes can be trimmed up to 1"
• Size: Width: 1-3/8" (34.93 mm) Height: 3/4" (19.1 mm)
• Subcategory: Door Thresholds
• Warranty: Five-Year Warranty

Installation & Operation

1. Verify hollow metal door bottom channel dimensions accommodate the 1-3/8" width by 3/4" height device profile.
2. Measure door width and trim device if necessary - 36" to 48" doors can be trimmed up to 3", other sizes up to 1" maximum.
3. Position the automatic door bottom in the door’s bottom channel ensuring proper alignment and clearance for operation.
4. Mark mounting hole locations using the device as a template for accurate placement of fastener points.
5. Secure the unit using the provided #6 x 5/8" pan head sheet metal screws, ensuring proper torque for secure attachment.
6. Test automatic operation to verify proper deployment and retraction of the vinyl insert throughout the door’s full range of motion. Refer to manufacturer documentation for complete installation details and adjustment procedures.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Government and Municipal Buildings
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Fire-Rated Door Assemblies

Why Choose Hager Quality?

Hager automatic door bottom products deliver professional-grade reliability with UL listed fire-rated construction and milled aluminum durability. Five-Year Warranty coverage provides added confidence for demanding commercial applications. Engineered specifically for hollow metal door applications where concealed installation and code compliance are essential requirements.

Support Resources

• Thresholds & Weatherstripping Catalog 2024 (PDF)
• 736 Press-On Weatherstrip Installation Instructions (PDF)
• Thresholds & Weatherstripping Price Book 2025 (PDF)