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Description
Werner Square Rung Extension Ladder 4.25m Double (57711420)The 577 Series 4. 13m double section extension ladder is constructed using high grade aluminium and extends to 7. 21m. Box section stiles provide added rigidity and sturdiness to ensure maximum performance on the job site. Features include unique wrap around top clips with smooth glide runners to reduce wear and tear, slip resistant square shaped rungs, and a wide stabiliser for added safety during use. Approved to the latest EN131 standard. For
The 577 Series 4.13m double section extension ladder is constructed using high grade aluminium and extends to 7.21m. Box section stiles provide added rigidity and sturdiness to ensure maximum performance on the job site. Features include unique wrap-around top clips with smooth-glide runners to reduce wear and tear, slip-resistant square shaped rungs, and a wide stabiliser for added safety during use. Approved to the latest EN131 standard. For Professional Use.
Free delivery (2-3 working days)
Features:
High performance robust box section stiles for durability
Heavy-duty wide stabiliser with slip-resistant feet for added safety
Integrated ladder level gauge for accurate positioning
Slip-resistant square rungs for comfort and security
Unique wrap-around top clips with smooth-glide runners to reduce wear and tear
Locking catches secure sections together for safe use and easy transportation
150kg load capacity**
Approved to the latest EN131 Standard
For Professional Use
Specifications:
Unique Selling Point Reach Greater Heights
Size 4.13m
Type Professional
Style Double Section
Approx. Product Weight (kg) 18.15kg
Max. Open Extended Length (m) 7.21m (23ft 7in)
Max. Standing Height (m) 5.97m (19ft 7in)
Safe Working Height (m) 7.72m (25ft 3in)
Number of Sections 2
Performance Professional
Material Aluminium
Colour of Ladder Rail Aluminium
Stabiliser Width (m) 1.2m (3ft 11in)
Ladder Width (m) 0.49m (1ft 7in)
Foot Material Plastic
Approx. Closed Length (m) 4.13m (13ft 6in)
Section x Rungs 2 x 14
Base Width (m) 1.2m (3ft 11in)
Certifications EN131 Professional and Non-Professional Use
Tread Type Square Rungs
Project Type Building and Maintenance
Max. Load (kg) 150kg (23st 9lb)
Guarantee 10 Year
Size 4.13m
Type Professional
Style Double Section
Approx. Product Weight (kg) 18.15kg
Max. Open Extended Length (m) 7.21m (23ft 7in)
Max. Standing Height (m) 5.97m (19ft 7in)
Safe Working Height (m) 7.72m (25ft 3in)
Number of Sections 2
Performance Professional
Material Aluminium
Colour of Ladder Rail Aluminium
Stabiliser Width (m) 1.2m (3ft 11in)
Ladder Width (m) 0.49m (1ft 7in)
Foot Material Plastic
Approx. Closed Length (m) 4.13m (13ft 6in)
Section x Rungs 2 x 14
Base Width (m) 1.2m (3ft 11in)
Certifications EN131 Professional and Non-Professional Use
Tread Type Square Rungs
Project Type Building and Maintenance
Max. Load (kg) 150kg (23st 9lb)
Guarantee 10 Year
*Safe Working Height based on 1.75m (5ft 9in) as the average reach height of a person
**Load includes user, tools, materials, etc.
**Load includes user, tools, materials, etc.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Good quality
These fit so well material is very tick nice for winter they have all different colors and it’s so comfy it’s really good value for your money for that level of thickness
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Reviewed in the United States on September 30, 2025
★★★★★ 5
Buy it
If you're looking for a comfortable thick and nice turtle neck this is the one. It's nice and form fitting nice weight to it to keep you warm. But not to thick that you cant just wear it on a regular sunny day if you wanted. The design pattern Is also very nice. Can dress it up or down. I bought the black and then immediately bought the rust orange color for my friend once he tried on mine he wanted one immediately so I gifted him one. He loves it. Definitely worth the buy. Excellent quality. I bought a Large 5"11 165lbs
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Reviewed in the United States on December 21, 2024
★★★★★ 5
What you see is what you get!
Color: 01-black, Size: Large
Fits great, fabric is amazing, turtle neck fits tight, and the quality is amazing!
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Reviewed in the United States on February 11, 2026
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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Reviewed in the United States on July 30, 2025
★★★★★ 5
Quality,warmth and fit
Color: Royal Blue, Size: Small
Really top quality. This is my 4th purchase of these Really great sweaters.
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Reviewed in the United States on February 12, 2026