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

3G Electric
NATIONAL GUARD 425SIA-4 Saddle Threshold, Aluminum, 4 ft, Fluted - Saddle Thresholds
NATIONAL GUARDSaddle Thresholds

NATIONAL GUARD 425SIA-4 Saddle Threshold, Aluminum, 4 ft, Fluted

The NATIONAL GUARD 425SIA-4 is a 4 ft long aluminum saddle threshold with a fluted transition type. 3G Electric sources this genuine industrial door threshold as part of our broader capability across 14 industrial…

SKU 3G-OTH-505046

Also listed as: 425SIA4 · 425SIA 4

Brand
NATIONAL GUARD
Item
425SIA-4 Saddle Threshold, Aluminum, 4 ft, Fluted
Part Number
425SIA-4
Category
Saddle Thresholds
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

NATIONAL GUARD
Manufacturer Part Number
425SIA-4
Type
Aluminum
Lg
4 ft
Transition Type
Fluted

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 425SIA-4 is a 4 ft long aluminum saddle threshold with a fluted transition type. 3G Electric sources this genuine industrial door threshold as part of our broader capability across 14 industrial departments, with specialist depth in combustion, pumps and controls serving as a trust anchor for all product categories we supply.

Frequently Asked Questions

What is the NATIONAL GUARD 425SIA-4 door threshold used for?

The NATIONAL GUARD 425SIA-4 is a 4 ft long aluminum saddle threshold used to seal the gap under doors, preventing drafts, moisture, and pests. Its fluted transition type provides a durable, slip-resistant surface for high-traffic industrial and commercial entrances.

What are the specifications of the NATIONAL GUARD 425SIA-4?

The NATIONAL GUARD 425SIA-4 is a 4 ft long aluminum saddle threshold with a fluted transition type. The manufacturer part number is 425SIA-4. It is designed for industrial door applications requiring a robust, corrosion-resistant seal.

Where to buy the NATIONAL GUARD 425SIA-4 worldwide?

3G Electric supplies the genuine NATIONAL GUARD 425SIA-4 aluminum saddle threshold worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us to order this fluted transition threshold as part of our broad industrial sourcing capability.

How to install the NATIONAL GUARD 425SIA-4 saddle threshold?

Install the NATIONAL GUARD 425SIA-4 by measuring the door opening, cutting the aluminum threshold to length if needed, and securing it with appropriate fasteners. Ensure the fluted surface faces upward for traction. Follow standard door threshold installation practices for a weathertight seal.

Not sure this is the right part? Photo-identify it→

NATIONAL GUARD Products

3G Electric supplies NATIONAL GUARD saddle thresholds. 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 →
This 4 ft long aluminum saddle threshold features a fluted transition type. It is used to seal the gap under doors, reducing drafts, debris ingress, and energy loss in commercial and industrial entrances
NATIONAL GUARD
This 4 ft long aluminum saddle threshold features a fluted transition type. It is used to seal the gap under doors, reducing drafts, debris ingress, and energy loss in commercial and industrial entrances
This 3 ft vinyl saddle threshold provides a smooth transition between flooring surfaces at doorways. It seals the gap under a door to reduce drafts, moisture, and debris entry in commercial or industrial facilities
NATIONAL GUARD
This 3 ft vinyl saddle threshold provides a smooth transition between flooring surfaces at doorways. It seals the gap under a door to reduce drafts, moisture, and debris entry in commercial or industrial facilities
This 4 ft stainless steel saddle threshold provides a smooth transition between flooring surfaces at doorways. It is used to seal gaps, reduce tripping hazards, and protect against weather infiltration in industrial, commercial, and warehouse facilities
NATIONAL GUARD
This 4 ft stainless steel saddle threshold provides a smooth transition between flooring surfaces at doorways. It is used to seal gaps, reduce tripping hazards, and protect against weather infiltration in industrial, commercial, and warehouse facilities
This 4 ft aluminum saddle threshold provides a transition between flooring surfaces at doorways. The fluted surface helps shed water and debris, suitable for commercial and industrial entrances
NATIONAL GUARD
This 4 ft aluminum saddle threshold provides a transition between flooring surfaces at doorways. The fluted surface helps shed water and debris, suitable for commercial and industrial entrances

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first