NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 48 in Lg, 2 5/16 in Wd
The NATIONAL GUARD Automatic Door Bottom (Single Fin Insert, MPN 420NHMA-4) is an aluminum door bottom measuring 48 inches in length and 2 5/16 inches in width. As a single fin insert type, it provides a…
SKU 3G-OTH-515139
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Product Description
The NATIONAL GUARD Automatic Door Bottom (Single Fin Insert, MPN 420NHMA-4) is an aluminum door bottom measuring 48 inches in length and 2 5/16 inches in width. As a single fin insert type, it provides a straightforward sealing solution for door gaps. 3G Electric interprets customer demand and delivers this genuine industrial part across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the NATIONAL GUARD Automatic Door Bottom used for?
The NATIONAL GUARD Automatic Door Bottom (420NHMA-4) seals the gap under a door to block drafts, light, and sound. It is commonly installed on commercial or industrial doors in facilities requiring basic environmental separation. 3G Electric supplies this genuine part worldwide.
What are the specifications of the NATIONAL GUARD 420NHMA-4?
This NATIONAL GUARD automatic door bottom is a single fin insert type made of aluminum. It measures 48 inches in length and 2 5/16 inches in width. The manufacturer part number is 420NHMA-4. 3G Electric sources this genuine part for global delivery.
Where to buy the NATIONAL GUARD Automatic Door Bottom worldwide?
3G Electric supplies the NATIONAL GUARD Automatic Door Bottom (420NHMA-4) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us to order this genuine industrial part for your door sealing application.
How to install a NATIONAL GUARD Automatic Door Bottom?
Install the NATIONAL GUARD 420NHMA-4 by cutting it to the exact door width, then attaching it to the bottom of the door using screws. Ensure the fin contacts the floor evenly when the door closes. 3G Electric provides this part but recommends following the manufacturer's instructions for proper fit.
NATIONAL GUARD Products
3G Electric supplies NATIONAL GUARD automatic door bottoms. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









