CertainTeed Horizontal Vinyl Siding
"Monogram 46L"


"Monogram 46L"

The Difference is Seamlessly Clear

Extra-long, extra-thick Monogram 46L has the same great benefits as traditional Monogram, plus it reduces seams. With traditional 12' siding panels, seams appear every two or three feet. Monogram's longer length panels can significantly reduce seams. On a wall that's 20' wide, there are approximately 40 laps with a 12' panel; with a 16' panel, 26 laps (35% fewer), and with Monogram 46L in 20' length, 0 laps.


Two classic styles - - Two length choices:
Double 4" Rough Cedar Clapboard, 16'8" or 20'
Double 5" Rough Cedar Clapboard, 16' or 20'

  • TruTexture rough cedar finish molded from real cedar boards
  • Patented STUDfinder is designed for accurate and secure installation
  • RigidForm 220 Technology tested to withstand wind load pressures up to 220 mph
  • CertiLock self-aligning, post-formed positive lock
  • Virtually maintenance free, never needs painting
  • 3/4" panel projection
  • Heavy-duty .046" thickness
  • Class 1(A) fire rating
  • Lifetime limited warranty
  • Works with traditional length Monogram 46 siding