Pella 803V0102 installation instructions Vertical Mullions

VERTICAL MULLIONS:

A.Lay the units on a smooth clean surface, exterior side up to perform these steps.

B.Apply two strips of foam tape down the fixed door frame sides. Place one strip on the interior rib and one strip on the exterior rib.

C.Position and align the sliding door with the fixed door.

D.Place a foam plug at the top and bottom between the exterior rib and the joining mullion groove.

E.Start the I bar joining connector from one end and drive it to the full height of the doors.

Note: A rubber mallet may be used to drive the I bar joining connector into position.

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F.Apply a bead of sealant, covering the mullion joint from the center of the I bar joining connector to the exterior.

G.Apply a reinforcement plate at the head using the square notches to align the plate to the head frame screws in the 1-1/2" wide flat groove to the interior side of the frame.

H.Secure the plate with #8 x 1" pan head sheet metal screws, using three screws per door head.

I.Align the reinforcement plate at the sill using the center 3/8" diameter holes to align the plate to the sill frame screws in the 1-1/2" wide flat groove.

J.Secure the plate with #8 x 1" pan head sheet metal screws, using three screws per door sill.

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