Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 5/16 in Wd - Automatic Door Bottoms
NATIONAL GUARDAutomatic Door Bottoms

NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 5/16 in Wd

The NATIONAL GUARD Automatic Door Bottom is a single fin insert type, model 420NA-36", constructed from aluminum. It measures 36 inches in length and 2 5/16 inches in width, designed to seal the gap under a door.

SKU 3G-OTH-515157

Brand
NATIONAL GUARD
Item
Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 5/16 in Wd
Category
Automatic Door Bottoms
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

NATIONAL GUARD
Manufacturer Part Number
420NA-36"
Type
Aluminum, Aluminum
Lg
36 in
Wd
2 5/16 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

NATIONAL GUARD Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NATIONAL GUARD Automatic Door Bottom is a single fin insert type, model 420NA-36", constructed from aluminum. It measures 36 inches in length and 2 5/16 inches in width, designed to seal the gap under a door.

Frequently Asked Questions

What is the NATIONAL GUARD Automatic Door Bottom 420NA-36" used for?

The NATIONAL GUARD Automatic Door Bottom seals the gap under a door to block drafts, light, and sound. It is commonly used in commercial and industrial facilities to improve energy efficiency and indoor environmental control. 3G Electric supplies this aluminum single fin insert model for worldwide delivery.

What are the specifications of the NATIONAL GUARD 420NA-36"?

The NATIONAL GUARD 420NA-36" is an automatic door bottom with a single fin insert. It measures 36 inches in length and 2 5/16 inches in width, and is made of aluminum. The manufacturer part number is 420NA-36". 3G Electric sources this model for global supply.

Where to buy the NATIONAL GUARD 420NA-36" worldwide?

3G Electric supplies the NATIONAL GUARD 420NA-36" automatic door bottom to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us to order this aluminum single fin insert model for your facility.

How to install the NATIONAL GUARD automatic door bottom?

Install the NATIONAL GUARD automatic door bottom by cutting it to exact door width, then mounting it to the bottom edge with screws. Ensure the fin insert contacts the threshold evenly when the door closes. 3G Electric provides sourcing support for this model globally.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from NATIONAL GUARD

View all NATIONAL GUARD parts
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 5/16 in Wd, Aluminum (MPN 420NHMA-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 5/16 in Wd, Aluminum (MPN 420NHMA-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Looped Insert, Aluminum, 48 in Lg, 2 15/16 in Wd, Black (MPN 520NA-48). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Looped Insert, Aluminum, 48 in Lg, 2 15/16 in Wd, Black (MPN 520NA-48). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Dual Fin Insert, Aluminum, 36 in Lg, 1 1/2 in Wd, Aluminum (MPN 320V-36"). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Dual Fin Insert, Aluminum, 36 in Lg, 1 1/2 in Wd, Aluminum (MPN 320V-36"). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Dual Fin Insert, Aluminum, 36 in Lg, 1 1/2 in Wd, Black (MPN 320S-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Dual Fin Insert, Aluminum, 36 in Lg, 1 1/2 in Wd, Black (MPN 320S-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Stainless Steel, 36 in Lg, 2 1/2 in Wd (MPN 229NSS-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Stainless Steel, 36 in Lg, 2 1/2 in Wd (MPN 229NSS-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 48 in Lg, 2 5/16 in Wd, Aluminum (MPN 420NHMDKB-4). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 48 in Lg, 2 5/16 in Wd, Aluminum (MPN 420NHMDKB-4). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 1/4 in Wd, Aluminum (MPN 220NA-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 36 in Lg, 2 1/4 in Wd, Aluminum (MPN 220NA-3). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 48 in Lg, 1 3/4 in Wd, Black (MPN 225N-48). Key specifications — Brand: NATIONAL GUARD.
NATIONAL GUARD
NATIONAL GUARD Automatic Door Bottom: Single Fin Insert, Aluminum, 48 in Lg, 1 3/4 in Wd, Black (MPN 225N-48). Key specifications — Brand: NATIONAL GUARD.