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577SERIES
PROFESSIONAL EXTENSION LADDERS
Box section stiles for
maximum strength and
durability.
EXCEPTIONALLY ROBUST AND BUILT TO LAST
Square rungs for added
security during use
High performance ladder level gauge
for accurate positioning
Available in double and
triple styles
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150kg
MAX. LOAD
(Load includes user, tools, materials, etc.)
577SERIES
PROFESSIONAL EXTENSION LADDERS
• Box section stiles designed to ensure the ladder is
lightweight but strong
• Slip-resistant square rungs for maximum safety
during use
• Easy to use push-up operation
SPECIFICATIONS
Unique wrap-around
top clips with smooth-glide
runners to reduce
wear and tear
High performance robust
box section stiles for
durability
Product
Code
57711020†2 x 6 1.83m (6´) 2.95m (9´8˝) 3.66m (12´) 6.69kg
57711120 2 x 8 2.40m (7´10˝) 4.08m (13´4˝) 4.75m (15´6˝) 10.12kg
57711220 2 x 10 3.01m (9´10˝) 4.97m (16´3˝) 5.56m (18´2˝) 12.34kg
57711320 2 x 12 3.57m (11´8˝) 6.09m (19´11˝) 6.64m (21´9˝) 14.81kg
57711420 2 x 14 4.13m (13´6˝) 7.21m (23´7˝) 7.72m (25´3˝) 18.15kg
57711520 2 x 16 4.70m (15´5˝) 8.33m (27´4˝) 8.80m (28´10˝) 25.72kg
57711620 2 x 18 5.21m (17´1˝) 9.12m (29´11˝) 9.61m (31´6˝) 28.35kg
57712020 3 x 6 1.89m (6´2˝) 4.13m (13´6˝) 4.76m (15´7˝) 12.39kg
57712120 3 x 8 2.45m (8´) 5.81m (19´) 6.38m (20´11˝) 15.42kg
57712220 3 x 10 3.01m (9´10˝) 6.93m (22´8˝) 7.46m (24´5˝) 22.92kg
57712320 3 x 12 3.58m (11´9˝) 8.61m (28´3˝) 9.09m (29´9˝) 28.91kg
57712420 3 x 14 4.14m (13´7˝) 9.73m (31´11˝) 10.17m (33´4˝) 33.05kg
Section
x Rungs
Closed
Length
DOUBLE SECTION
TRIPLE SECTION
Compact ladders with a greater reach
^
Compared to a double section ladder with the same closed length.
†
Stabiliser bar is not required or supplied with the double 1.83m model.
Open
Length
*Based on 1.75m (5´9˝) as the average reach height of a person.
Safe Working
Height*
^
Weight
Locking catches secure
sections together for
added safety during use
and easy transportation
Heavy-duty wide
stabiliser with
slip-resistant feet
for added safety
†
Werner UK Sales & Distribution Ltd. Blackwater Trading Estate, The Causeway, Maldon, Essex, CM9 4LJ
57712020
Model
wernerladder.co.uk
High performance ladder level
gauge for accurate positioning
Slip-resistant, square
rungs for added grip
Suitable for Professional & Non-professional use
©2021 WernerCo Rev. C 04/21
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