Ultimate Double Hung Magnum Windows

Removing the Bottom Sash

Remove interior jamb stop by first unscrewing the top screws. Lift the sash to the fully "up" position and remove the lower screws. Grasp and remove jamb stop.

Raise the bottom sash to a recommended minimum 3" up from the sill. With a person at each side of the window, insert a putty knife or plastic credit card between the bottom sash checkrail and jamb. Slide the putty knife down approximately 4" past the top of the sash to release the latch blade. See figure (b).


Lean top of sash toward you to a horizontal position to lock clutches. Lift both sides of the sash up 2"-3" (separating the pivot pins from the clutches). See figure (c). Rotate the sash counterclockwise until pins clear the jambs and remove the sash. See figure (d)

Removing the Top Sash

Remove the top sash wood jamb filler by pushing on the flange and rotating the filler towards the exterior.

Remove the exterior clad jamb filler by pushing on the flange and rotating the filler towards the interior. Take care not to drop the filler. Wood units have a two part bottom filler. Remove the lower section following the same procedure as removing the clad filler. The top portion of the filler may be removed by placing a flat screwdriver behind the filler and carefully prying it off.


NOTE: Some clad fillers may require inserting a flat screwdriver under the exterior edge of the filler. Gently pry it away from the jamb carrier.

Lower the top sash a minimum of 4" and with a person at each side of the unit release the top tilt latches. Ease top of sash towards you to a horizontal position. Lift both sides of the sash upward 2"-3" (separating the pivot pins from the clutches). Rotate the sash counterclockwise until pins clear the jambs and remove the sash.

Installing the Top Sash

Ensure that both left and right clutches are parallel and in the (vertical) locked position.

NOTE: To reposition the clutches use both hands on a flat screwdriver to rotate the clutch cam to the released (horizontal) position. Firmly holding the screwdriver with both hands, slide the clutch to the desired position. Rotate the balance clutch cam to the locked (vertical) position.

With a person on each side of the sash, insert the top sash ensuring that the pivot pins are placed above the jamb clutches. Lift window into place, pull back on the tilt latch and tilt the unit up into place. Release the latch ensuring that the latch pin is properly seated and the sash is securely in place.

Replace the interior jamb top and bottom fillers by first inserting the flange side of the filler into place and pushing on the filler to rotate and snap the filler into place.

Installing the Bottom Sash

Ensure that both left and right clutches are parallel and in the locked position. With a person on each side of the sash insert the bottom sash ensuring that the pivot pins are placed above the jamb clutches. Lift the sash up into place using a putty knife to depress the latch blades. Once into place remove the putty knife ensuring that the latch blades are properly seated into the jamb carrier.

Install the interior jamb stop and reinstall ALL interior jamb stop screws.

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