• Snap lock pipe or pipes (I) together by pressing seam together. Be sure they are totally locked.
• Use a knife to score clear protective film along both sides of seam inside each section.
• Bottom section of pipe: Peel clear protective film down to about 12" from bottom and leave until installation is completed.
• Remove all film from all other sections of pipe.
• If more than one section of pipe required, assemble all pipes together. Inserting the crimped edge down into the pipe below it.
  NOTE: Crimped edge is always at bottom of pipe.
• Do not line up seams but rather alternate them from front to back.
• Once assembled, measure from top to bottom to be sure pipe is long enough.
• Apply foil tape to all seams and joints.
  Note: Be sure and apply foil tape over the top edge of the top pipe and down the inside of the pipe 1/2". (Fig. 5)

STEP 15: Measure from top of pipe to where pipe is to be cut with a pair of tin snips. Draw a line around pipe and cut along this line.