Specification

38
NOT FOR WORKING AROUND ELECTRICITY. LIGHTWEIGHT.
ALUMINUMEXTENSION LADDERS
Extra heavy duty
I-beam rails
Traction-Tred
®
deeply
serrated aluminum
round rungs
Model
508-1
518-1 18' 6.4 41.0
520-1 20' 7.1 45.5
524-1 24' 14.0 60.5
DIMENSIONS
Rails: Flange: Round Rungs: Base Width:
8' to14' 3" wide 1-3/16" 1-1/4" 16-7/8"
16' to 20' 3" wide 1-1/4" 1-1/4" 16-7/8"
24' 4" wide 1-3/8" 1-1/4" 20-5/8"
Extra heavy duty
I-beam rails
Slip-resistant
Traction-Tred
®
D-rungs
Rugged spring
loaded locks
Mar-resistant end
caps notched for
easy separation of
sections
Molded
slip-resistant
shoes
Base and fly
separate easily
for use as an
extension or two
single sections
4-piece pulley with 3/8"
rope. 36' to 48' models
have heavy duty rope and
double pulley system
Heavy duty, self-aligning,
free-swinging shoe with
slip-resistant tread and
replaceable steel
spur plate
Internal guides
Model
D520-2
Interlocking
side rails
NOTE: Type IAA duty rating is for extension ladders up to 32 ft.
Rails: 3-1/4" wide Rungs: 1-3/4"
Flange: 1-3/16" wide (20' & 24')
1-1/4" wide (28' to 48')
Base Section Width: 19-1/8" outside shoes
20-1/8" (44' & 48')
DIMENSIONS
D536-2 36' 32' 15.4 90.0
D540-2 40' 35' 17.0 99.5
D544-2 44' 39' 21.4 131.0
D548-2 48' 43' 23.3 142.5
Model
No.
Total Length
of Sections
Max. Working
Length
Approx. Cu. Ft.
Per Unit
Approx. Shipping
Wt. Lbs.
D520-2 20' 17' 8.8 42.0
D524-2 24' 21' 10.4 49.0
D528-2 28' 25' 12.1 65.5
D532-2 32' 29' 13.8 74.0
SPECIFICATIONS
TYPE IAA
DUTY RATING
TYPE IAA
DUTY RATING
375lbs. 375lbs.
500-1SERIES Round Rung Straight Ladder D500-2SERIES D-Rung Extension Ladder
LOAD CAPACITY LOAD CAPACITY PER SIDE
Exclusive
Alflo
®
rung
joint means
Twist-Proof
®
performance
Exclusive
Alflo
®
rung
joint means
Twist-Proof
®
performance
TYPE IA
DUTY RATING
300lbs.
LOAD CAPACITY
TYPE IA
DUTY RATING
300lbs.
LOAD CAPACITY
NOTE: Type IAA duty rating is for single ladders up to 16 ft.
Model No.
Total
Length
Approx. Cu. Ft.
Per Unit
Approx. Shipping
Wt. Lbs.
508-1 8' 2.9 16.5
510-1 10' 3.6 20.0
512-1 12' 4.3 24.0
514-1 14' 5.0 27.5
516-1 16' 5.7 37.0
SPECIFICATIONS