LT90 Install Instructions

Elbow Assembly Tabs
Bend Tabs Straight Up
Assembly Tabs Securing Elbow Joint
Flatten Tabs / Screw Secure
Tape Joints Along Flange
  • Bend all the tabs straight up with a flat screwdriver.
  • Mate the two parts so that the screw holes line up.
  • Secure the flanges with five sheet metal screws.
  • Bend tabs down and tape the joints along the flange.

  • Installation
    1. Model LT90 should be measured as 1-1/2 feet against the total allowable duct length. See engineering information based on ASHRAE calculations and code references: 2012 IMC Table 504.6.4.1 and IRC Table M1502.4.4.1 for 10" radius fittings.
    2. Arrow indicates airflow direction from dryer and provides for proper male and female connections.
    3. When used with the Model 4D “Down” Dryerbox®, cut and insert a 3” long section of snaplock pipe to transition into port for adequate flex connection.

    LT90 PDF Installation InstructionsClick Here for Printable Instruction Sheet