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Scientific Anglers Fly Line Backing from W. W. Doak
Scientific Anglers Fly Line Backing
Made from low stretch dacron woven to a very fine diameter.

Colour: White
20 lb. / 100 yd. 
#3540-1
 $8.50  
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20 lb. / 150 yd. 
#3540-2
 $11.50  
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20 lb. / 200 yd. 
#3540-3
 $15.00  
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20 lb. / 250 yd. 
#3540-4
 $18.50  
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30 lb. / 100 yd. 
#3545-1
 $9.25  
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30 lb. / 150 yd. 
#3545-2
 $13.50  
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30 lb. / 200 yd. 
#3545-3
 $17.00  
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30 lb. / 250 yd. 
#3545-4
 $21.00  
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Scientific Anglers Fly Line Backing from W. W. Doak
Scientific Anglers Fly Line Backing
Made from low stretch dacron woven to a very fine diameter.

Colour: High Visibility Orange
20 lb. / 100 yd. 
#3550-1
 $8.50  
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20 lb. / 150 yd. 
#3550-2
 $11.50  
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20 lb. / 200 yd. 
#3550-3
 $15.00  
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20 lb. / 250 yd. 
#3550-4
 $18.50  
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30 lb. / 100 yd. 
#3555-1
 $9.25  
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30 lb. / 150 yd. 
#3555-2
 $13.50  
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30 lb. / 200 yd. 
#3555-3
 $17.00  
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30 lb. / 250 yd. 
#3555-4
 $21.00  
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Scientific Anglers Fly Line Backing from W. W. Doak
Scientific Anglers Fly Line Backing
Made from low stretch dacron woven to a very fine diameter.

Colour: Optic Green
20 lb. / 100 yd. 
#3560-1
 $8.50  
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20 lb. / 150 yd. 
#3560-2
 $11.50  
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20 lb. / 200 yd. 
#3560-3
 $15.00  
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20 lb. / 250 yd. 
#3560-4
 $18.50  
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Scientific Anglers<br>XTS Gel Spun Backing from W. W. Doak
Scientific Anglers
XTS Gel Spun Backing
  • Micro-diameter gel-spun polyethylene allows up to 75% more capacity than standard material
  • Retains 100% strength while wet
  • High abrasion resistance, high visibility, impervious to UV rays, gas, salt, and other elements
  • Smooth coating and low coefficient of friction (COF)
  • 250 yds.
30 lb.
 
Colour: Yellow 
#3192
 $31.00  
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Colour: Blue 
#3198
 $31.00  
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50 lb.
 
Colour: Yellow 
#3199
 N/A
Colour: Blue 
#3197
 $41.00  
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Cortland Micron from W. W. Doak
Cortland Micron
Premium quality fine diameter braided fly line backing.

Colour: White
20 lb. / 100 yd. 
#3360-1
 $10.00  
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20 lb. / 150 yd. 
#3360-2
 $14.00  
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20 lb. / 200 yd. 
#3360-3
 $18.00  
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20 lb. / 250 yd. 
#3360-4
 $21.50  
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30 lb. / 100 yd. 
#3365-1
 $11.00  
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30 lb. / 150 yd. 
#3365-2
 $15.00  
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30 lb. / 200 yd. 
#3365-3
 $19.50  
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30 lb. / 250 yd. 
#3365-4
 $23.50  
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Cortland Micron from W. W. Doak
Cortland Micron
Premium quality fine diameter braided fly line backing.

Colour: High Visibility Green
 
30 lb. / 100 yd. 
#3375-1
 $11.00  
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30 lb. / 150 yd. 
#3375-2
 $15.00  
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30 lb. / 200 yd. 
#3375-3
 $19.50  
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30 lb. / 250 yd. 
#3375-4
 $23.50  
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Cortland Micron from W. W. Doak
Cortland Micron
Premium quality fine diameter braided fly line backing.

Colour: Blue
20 lb. / 100 yd. 
#3380-1
 $10.00  
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20 lb. / 150 yd. 
#3380-2
 $14.00  
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20 lb. / 200 yd. 
#3380-3
 $18.00  
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20 lb. / 250 yd. 
#3380-4
 $21.50  
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30 lb. / 100 yd. 
#3385-1
 $11.00  
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30 lb. / 150 yd. 
#3385-2
 $15.00  
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30 lb. / 200 yd. 
#3385-3
 $19.50  
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30 lb. / 250 yd. 
#3385-4
 $23.50  
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Cortland Micron from W. W. Doak
Cortland Micron
Premium quality fine diameter braided fly line backing.

Colour: Orange
20 lb. / 100 yd. 
#3387-1
 $10.00  
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20 lb. / 150 yd. 
#3387-2
 $14.00  
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20 lb. / 200 yd. 
#3387-3
 $18.00  
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20 lb. / 250 yd. 
#3387-4
 $21.50  
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Last Updated: June 14, 2026 at 12:10:53 AM
W. W. Doak (506) 365-7828
All prices are listed in US Dollars