Copper Base
Roof Flashings
  • 16 ounce dead soft 99.9% pure copper base
  • A.S.T.M. B-370 152M – 00
  • Premium Elastomeric Collar
  • Excellent ozone resistance
  • Improved UV resistance
  • Collar rated 180ºF continuous heat
    (For higher temperatures, see our Silicone Residential Masterflash)
  • Approved for Type B Gas Vent Installations
  • Fits up to 40º roof pitch
  • Not for hot-mopped or built-up roof applications
  • Made in the USA
  • ICC-ES Approved

NOTE: Using petroleum based mastics, sealing compounds or paints on collar will void warranty.

Prod. No.
Pipe Size
Base Size
Ctn. Pack
Ctn. Wt.
Dim. W
Dim. L
Dim. R
Dim. F
Dim. C
Dim. H
CNC30
3"
10-3/4"x14-1/2"
12
13#
10-3/4"
14-1/2" 4-1/2" 2-1/2" 5-1/2" 2-5/8"
CNC40
4"
11-3/4"x15-1/2"
12
16#
11-3/4"
15-1/2" 4-1/2" 2-1/2" 6-1/2" 2-3/8"
CN123 1.5"-2"-3" 10.75"x14.5" 12 13# 10.75" 14.5" 4.25" 2.5" 5.25" 2.75"
CN340 3"-4" 11.75"x15.5" 12 17# 11.75" 15.5" 4.5" 2.5" 6.5" 3"
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