MB-79N crank-out
Crank-out casement built to AAMA standards. Designed for the US market.
Cross-Section
Technical Specifications
Frame / Sash Depth
2.76" / 3.11" (70 / 79 mm)
U-Factor (best, SI)
0.30 Btu/(h-ft2-F)
Glazing Range
0.47" - 2.19" (12 - 55.5 mm)
AAMA Performance Class
CW50
Air Infiltration
Up to 1.57 psf
Water Resistance
Up to 7.52 psf
Installation
Nailing fin system (US standard)
Operation
Crank-out operator at bottom rail
Screen
Frame-mounted insect screen (exterior)
Thermal Versions
ST / SI
Color Options
Two-color profile available
Overview
What makes the MB-79N crank-out
stand out.
The MB-79N CO (Casement Operator) is Aluprof's American-spec crank-out window - an outward-opening casement designed and tested specifically for the US market. Built on the proven MB-79N thermal platform with 70 / 79 mm frame and sash depths, the CO uses a hand-crank operator at the bottom rail (the standard for US casement windows) instead of European-style espagnolette handles. AAMA CW50 certified with a nailing-fin installation system and full compatibility with frame-mounted insect screens. Available in ST (standard) and SI (super-insulated) thermal versions, with two-color profile options and glazing thicknesses from 12 to 55.5 mm.
Learn more about thermally broken aluminum technology or compare European aluminum system providers.
Key Highlights
- Crank-out operator at bottom rail - matches US casement convention
- AAMA CW50 certified to US fenestration standards
- Nailing fin installation system for standard rough-opening framing
- Frame-mounted exterior insect screen - clean interior view
- Sash profiles hidden from interior view for a slim sightline
- ST and SI thermal variants sharing the MB-79N platform
Ideal For
US residential new construction where crank-out casement is the standard, builders working with rough-opening wood framing who need a nailing-fin install, and projects that need AAMA-certified performance on paper for permitting or HOA review.
Consider an Alternative When
If you want push-out casement without a crank handle, look at the MB-79N CSF. If your project allows European tilt-and-turn inswing operation, the standard MB-79N delivers higher air and water tightness on the same platform.
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