CLEAR OPENING DIMENSIONS
The Kolbe standard rough opening dimensions published in our product literature are provided as a guideline to maintain a minimum 1/4" space between the window or patio door and the building structure. There are certain situations where Kolbe recommends a gap larger than our published 1/4" standard: When installation clips are used, the gap should be increased to 1/2" on the sides, top and bottom of the unit. When mulls are installed in the opening, the gap all around should be increased to 1/2". For installation consistency, the same gap should be used on all units in the project. When a sill pan drainage system is used, the gap should be increased to 1/2" on the top and bottom of the unit. Because every installation is different, Kolbe strongly recommends consultation with the local supplier or a qualified contractor, architect or structural engineer prior to the installation of any Kolbe product. Installation of Kolbe products, including sizing of rough opening, method of attachment, fastener selection, and code compliance is the sole responsibility of the architect, building owner, contractor and/or consumer. Unless otherwise specified, if units are ordered by rough opening, Kolbe will size the units using our standard minimum 1/4" gap – regardless of the options or construction of the product ordered. “Egress” has long been the term used to describe the clear opening dimensions of a window or door necessary to enter or exit a building in case of an emergency. With the release of the International Building Code (IBC) and International Residential Code (IRC), “egress” is no longer the appropriate term. IBC and IRC have set the following as basic requirements for Emergency Escape & Rescue Openings.
Clear Opening
Sq. Ft. of Unit Frame Dim.
Sq. Ft. Clear Opg.
Product #
Sq. Ft. D.L.O.
Sq. Ft. Vent
Width
Height
Casements with Standard Adjustable Hinges (All Glastra) MC1620 0.88 6-29/32" 18-9/32" 1.46 1.56 2.86 MC1626 1.16 6-29/32" 24-9/32" 1.96 2.07 3.59 MC1630 1.45 6-29/32" 30-9/32" 2.45 2.58 4.31 MC1636 1.74 6-29/32" 36-9/32" 2.94 3.09 5.04 MC1640 2.03 6-29/32" 42-9/32" 3.44 3.61 5.77 MC1646 2.32 6-29/32" 48-9/32" 3.93 4.12 6.50 MC1650 2.60 6-29/32" 54-9/32" 4.42 4.63 7.23 MC1656 2.89 6-29/32" 60-9/32" 4.91 5.14 7.96 MC1660 3.18 6-29/32" 66-9/32" 5.41 5.65 8.69 MC2020 1.64 12-29/32" 18-9/32" 2.21 2.32 3.84 MC2026 2.18 12-29/32" 24-9/32" 2.95 3.08 4.81 MC2030 2.71 12-29/32" 30-9/32" 3.69 3.84 5.79 MC2036 3.25 12-29/32" 36-9/32" 4.44 4.61 6.77 MC2040 3.79 12-29/32" 42-9/32" 5.18 5.37 7.75 MC2046 4.33 12-29/32" 48-9/32" 5.92 6.13 8.73 MC2050 4.87 12-29/32" 54-9/32" 6.66 6.89 9.71 MC2056 5.40 12-29/32" 60-9/32" 7.41 7.65 10.69 MC2060 5.94 12-29/32" 66-9/32" 8.15 8.41 11.67 MC2620 2.40 18-29/32" 18-9/32" 2.95 3.08 4.81 MC2626 3.19 18-29/32" 24-9/32" 3.94 4.09 6.04 MC2630 3.98 18-29/32" 30-9/32" 4.94 5.11 7.27 MC2636 4.76 18-29/32" 36-9/32" 5.93 6.12 8.50 MC2640 5.55 18-29/32" 42-9/32" 6.92 7.13 9.73 MC2646 6.34 18-29/32" 48-9/32" 7.91 8.14 10.96 MC2650 7.13 18-29/32" 54-9/32" 8.91 9.15 12.19 MC2656 7.91 18-29/32" 60-9/32" 9.90 10.16 13.42 MC2660 8.70 18-29/32" 66-9/32" 10.89 11.18 14.65 MC3020 3.16 24-29/32" 18-9/32" 3.69 3.84 5.79 MC3026 4.20 24-29/32" 24-9/32" 4.94 5.11 7.27 MC3030 5.24 24-29/32" 30-9/32" 6.18 6.37 8.75 MC3036 6.28 24-29/32" 36-9/32" 7.42 7.63 10.23 MC3040 7.31 24-29/32" 42-9/32" 8.66 8.89 11.71 MC3046 8.35 24-29/32" 48-9/32" 9.91 10.15 13.19 MC3050 9.39 24-29/32" 54-9/32" 11.15 11.41 14.67 MC3056 10.43 24-29/32" 60-9/32" 12.39 12.68 16.15 MC3060 11.46 24-29/32" 66-9/32" 13.64 13.94 17.63
Minimum Opening Width: 20 inches (508 mm) Minimum Opening Height: 24 inches (610 mm) Minimum Opening Area: 5.7 sq. ft. (0.53 m 2 )
NOTE: Please check your local codes to confirm that these Emergency Escape & Rescue Opening requirements are applicable. Other requirements may also apply.
NOTE: For the most up-to-date data, please visit kolbewindows.com Shaded units meet most national building codes for emergency escape and rescue requirements.
68 Kolbe Windows & Doors
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