Hager 747S-N 36" Automatic Hea...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$148.87
$112.41
Hager 747S-N 36" Automatic Heavy Duty Door Bottom with Surface Applied End Caps and Neoprene Insert

Hager 747S-N 36" Automatic Heavy Duty Door Bottom with Surface Applied End Caps and Neoprene Insert

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Model: 747SN 36 CLR
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$148.87
$112.41
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Hager 747S-N 36" Automatic Heavy Duty Door Bottom with Surface Applied End Caps and Neoprene Insert

Professional Automatic Door Sealing Solution

The Hager 747S-N automatic heavy duty door bottom provides reliable sealing for commercial applications with its 36" length and surface-applied design. This UL listed door bottom features a neoprene insert for effective sealing with a maximum drop of 3/4" (19.1 mm) and compact 7/8" x 1-13/16" (23 mm x 47 mm) profile dimensions. The unit comes complete with surface applied end caps and all necessary mounting hardware for professional installation.

Professional Features & Benefits

  • Precise Length Options: Available in lengths from 12" to 60" with this 36" model furnished to exact specifications for accurate fit.
  • Flexible Trimming Capability: Lengths 30" and longer can be trimmed up to 5" for field adjustment and custom applications.
  • Maximum Sealing Drop: 3/4" (19.1 mm) maximum drop provides effective sealing against air, sound, and light infiltration.
  • Compact Profile Design: 7/8" x 1-13/16" (23 mm x 47 mm) size accommodates standard door applications without interference.
  • UL Listed Fire Rating: UL listed construction meets fire safety requirements for commercial building applications.
  • Complete Hardware Package: Includes surface applied end caps, #8 x 1/4" pan head sheet metal screws, and all mounting accessories.
  • Durable Neoprene Insert: Neoprene sealing element provides long-lasting performance and effective environmental sealing.
  • Manufacturer Warranty: Five-year warranty provides added confidence and protection for commercial installations.

Technical Specifications

  • Commercial/Residential: Commercial
  • Fasteners: #8 x 1/4" Pan head sheet metal screws furnished with surface mount types #6 x 5/8" Pan head sheet metal screws furnished with mortise types
  • Finishes: CLR, DBA, BLA
  • Fire Rating: UL Listed
  • Inserts: Neoprene
  • Length: 12" to 60"
  • Max Drop: 3/4" (19.1 mm)
  • Notes: Furnished exact length as stated; Lengths 16"-29" can be trimmed up to 2"; Lengths 30" and longer can be trimmed up to 5"; Furnished with mortise types and surface mount types; DBA/GLD end caps available on MIL and CLR finish; Accessory Pack includes endcaps, screws, strike plate, and instructions
  • Size: 7/8" x 1-13/16" (23 mm x 47 mm)
  • Subcategory: Door Thresholds
  • Warranty: Five-Year Warranty

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness and clearance for the 7/8" x 1-13/16" profile dimensions.
  2. Position the door bottom on the door surface and mark mounting hole locations using the provided template or by measuring from the end caps.
  3. If field trimming is required, trim up to 5" from the specified 36" length following manufacturer guidelines for proper end cap positioning.
  4. Secure the unit to the door using the provided #8 x 1/4" pan head sheet metal screws, ensuring proper alignment and level installation.
  5. Install the surface applied end caps and verify proper sealing contact with the threshold or floor surface.
  6. Test automatic operation by opening and closing the door to verify the neoprene insert properly extends and retracts with door movement. Refer to manufacturer documentation for complete installation details and adjustment procedures.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Hager Quality?

Hager automatic door bottom products deliver professional-grade reliability with UL listed construction and precision-manufactured components rated for demanding commercial applications. The five-year warranty demonstrates Hager's commitment to quality and provides added confidence for professional installations. Engineered with durable neoprene sealing elements and heavy-duty construction where dependable environmental sealing performance is essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Door Bottom Sweeps
Commercial/Residential:
Commercial
Subcategory:
Door Thresholds
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Hager 747SN 36 CLR – Frequently Asked Questions

1) Will the Hager 747S-N automatic door bottom seal a gap under my door, and how big a gap can it close?
The 747S-N drops a neoprene seal against the floor when the door closes, with a maximum drop of 3/4 inch (19.1 mm). If the undercut on your opening is bigger than 3/4 inch once the door is hung, the seal won't reach the floor and you'll need a threshold under it to bring the contact surface up. The drop is automatic, triggered by the door closing against the frame, so nothing drags across the floor while the door swings.
2) Does the Hager 747S-N mount on the face of the door or does it have to be mortised into the bottom rail?
This one is the surface applied version, so it screws to the face of the door at the bottom rail with the #8 x 1/4 inch pan head sheet metal screws that come in the box. No routing of the door bottom is required. Hager builds the same automatic door bottom in a mortise type as well, which is fastened with #6 x 5/8 inch pan head screws and buries the housing in the door edge for a cleaner look. On an existing door that isn't prepped, surface applied is the one that goes on without millwork.
3) Will a 747S-N automatic door bottom fit under my door without hitting the frame or the stop?
The housing profile is 7/8 x 1-13/16 inches (23 x 47 mm), so that is the space it needs at the bottom of the door. On a surface applied installation the body sits proud of the door face by the smaller of those dimensions, which matters if the door closes tight into a rabbeted frame or against a stop at the bottom. Check the leaf clears the stop by that much before you drill.
4) What comes in the box with the Hager 747S-N, and what else do I need to buy to finish the install?
The accessory pack covers the install: surface applied end caps, the #8 x 1/4 inch pan head sheet metal screws, a strike plate, and instructions. The strike plate is the part people forget it needs, and it ships with the unit. Nothing else is required for a standard surface mount, though if the floor gap exceeds the 3/4 inch drop you would add a threshold separately.
5) Should I use an automatic door bottom like the 747S-N or just a surface door sweep?
A sweep rides on the floor the whole time the door swings, so it wears, it drags on carpet, and it fights the closer. The 747S-N holds its neoprene seal up off the floor and drops it only when the door closes, which is why it is the choice on carpeted corridors, on openings with a floor finish you don't want scuffed, and where you're sealing for sound and light rather than just blocking a draft. A sweep is simpler and cheaper to install where the floor is hard and the door gets light traffic.
6) What finish does the Hager 747S-N come in, and will it match the other door bottoms in my building?
Hager offers this automatic door bottom in clear aluminum (CLR), dark bronze anodized (DBA), and black anodized (BLA). The 36 inch 747S-N is stocked in CLR clear aluminum, which is the standard match for aluminum storefront and mill finish hardware. If you're standardizing a floor of doors, note that the DBA and gold end caps are available on mill and clear finish units, so end cap color and extrusion color are specified separately.
7) How do I size a Hager automatic door bottom for doors that aren't 36 inches wide?
Hager builds the 747S-N in lengths from 12 to 60 inches and furnishes each one at the exact length ordered, so the normal practice is to order the length that matches the door width rather than buying long and cutting. Measure the door leaf width, not the opening. Field trim is a correction, not a sizing method: 2 inches on units 16 to 29 inches, 5 inches on units 30 inches and up.
8) Why is my automatic door bottom not sealing after installation?
On a 747S-N, the usual cause is the plunger on the end of the housing not making contact with the strike plate on the frame. The unit drops when that plunger is pushed in as the door closes, so if the strike plate that ships in the accessory pack wasn't installed, or it is out of alignment with the plunger, the seal never deploys. The second cause is a floor gap past the 3/4 inch maximum drop, where the seal extends fully and still doesn't touch. Hager publishes step by step weatherstripping installation instructions covering the adjustment.
9) Is neoprene the right seal material for an exterior or a mechanical room door?
Neoprene is the insert in the 747S-N, and it is the general purpose commercial choice: it stays flexible, resists ozone and weather, and takes repeated compression without taking a set the way a foam would. Hager rates this door bottom as a commercial product, not residential, so it is built for the cycle count on office, school, healthcare, and multi-tenant openings.
How fast can I get the Hager 747SN 36 CLR delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Hager 747SN 36 CLR come with a warranty?
Absolutely. The Hager 747SN 36 CLR is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Hager 747SN 36 CLR?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Hager 747SN 36 CLR from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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