Manual
MEASUREMENT GUIDE
for Premium Pocket Windows (JMI001)
Thank you for choosing a JELD-WEN Premium Wood or Clad Wood Pocket Window. Please read this document fully before beginning. Consult your
local building code ofcial for applicable codes and regulations (particularly regarding minimum egress requirements). The installation of a pocket
(replacement) window will not eliminate installation or maintenance problems with an existing window. Problems such as wood decay and water
leaks around the existing frame must be investigated and xed prior to installing a pocket window. Windows produced to user specied dimensions
cannot be returned. Be sure the provided measurements are correct.
• Theexistingframejambdepth(“pocket”)mustbe31/4"orgreaterforall
windowsexceptthecasement,whichrequiresatleasta4"pocket.
• Wooddouble-hungpocketwindowsonlytonan8°orlargerslopedsill.
• Iftheexistingwindowsillisnotlevel,oriftheexistingwindowisnot
square and plumb, installation may be complicated and additional trim
work may be needed during installation. Consider professional installation
assistance.
• Usetheworksheetonthebacktorecordmeasurementsforeachwindow
tobereplaced.Useadditionalcopiesasneededformorewindows.
• Recordeachwindow’slocationinthehouseontheworksheetinamanner
that clearly identies it.
• Ifthereismorethan1/8"deviationwithineachsetofmeasurements,
investigate the cause and seek professional assistance to correct problems.
• Performallmeasurementsoneachwindowbeforegoingtothenext
window.
• Individuallymeasureeachexistingwindowtobereplaced.Donotassume
similar looking windows are exactly the same size.
• Measureaccurately,tothenearest1/8".
• Ifagroupofwindowsononewallareallverysimilarinheight,consider
using the smallest height measurement for all windows in the group. This
will maintain a pleasing appearance. This choice however could result in
additional trim work on installation.
Note!Measuringanexistingsloped-sillpictureortransomwindowfor
replacementismoredifcultbutthegoalisthesame.Measurethewidth
betweenthesidejambs,notincludinganystops/trim(wood-to-wood).
Measuretheheightfromthetruesilltotheheadofthewindow.Partial
disassembly of the existing window may be necessary. Due to the difculty in
measuring correctly, professional assistance is recommended.
IMPORTANTINFORMATION
•Measurethewidthbetween
thesidejambs(woodsurfaceto
wood surface) in three places:
top, middle and bottom.
•Temporarilyremovejamb
liners if necessary and avoid
any stops, weatherstrip,
balance cords, pulleys, etc.
•Recordyourmeasurements.
MEASURETHEWIDTH
1
CONFIRMSQUARENESS
OFEXISTINGWINDOW
3
•Conrmtheexisting
window is square by
measuring both diagonals.
Ifthetwodiagonal
measurements differ by
morethan1/4",anout-of-
squareadjustmentinthe
width of the window must
be made.
•Theadjustmentis
determined by creating
a plumb line (using a
level) from each corner to
thesillorhead.Usinga
plumb line that falls within
the window opening,
measure the out of square
adjustment.
•Subtractthismeasurement
from the smallest width
measurement.Record
thisadjustedwidthasthe
smallest width.
MEASURETHEHEIGHT
2
•Measuretheheightfromthe
head to the sill in three places:
left side, middle and right side.
•Atthehead,measure
directly from the wood
header avoiding any stops,
weatherstrip and liners.
•Atthesill,measureonthe
exterior side directly next to
the sill stop at the highest
point of the sloped sill.
•Recordyourmeasurements.
Adjustment
Head
Sill
Wood side
jamb
Wood side
jamb
Interiorstop
Parting stop
Exterior stop
Jamb depth
Measuring
locations
Head
jamb
Sill
Sillstop
Stool
Measuredirectly
behind sill stop
Measuring
locations
Measuring
locations
JELD-WEN reserves the right to change product specications without notice. Please check our Web site, www.jeld-wen.com for current information.
©2011 JELD-WEN, inc. | JELD-WEN and Reliability for Real Life are trademarks or registered trademarks of JELD-WEN, inc., Oregon, USA.
Head
Sill
Head
Sill