
Hinged Casement
Series 41: Heavy duty framing system suitable for large windows and doors; supports thicker glass for higher noise insulation and both single and double casements accredited to Secured by Design.
Offers full and easy access to an outer window or door. Neat and unobtrusive with single casements having no mullions or transoms to impede the view.
Offers full and easy access to an outer window or door. Neat and unobtrusive with single casements having no mullions or transoms to impede the view.

Series 41 Heavy Duty
A versatile heavy duty hinged casement suitable for treating large windows and doors. Neat flush hinges and, if required, flush locks provide clean lines that are suited to many interior styles including clean environments. Glazing configurations are available that can offer improved acoustics, higher thermal performance, integral blinds and switchable glass. A robust lock option achieves enhanced security and Secured by Design accreditation for both single and double casements.
Recommended maximum frame sizes (mm)
H | W | ![]() |
|
Single | 2700 | 1500 | Link to BIM data |
Double | 2700 | 3000 | Link to BIM data |
Stable Door | 2700 | 1350 | Link to BIM data |
Glazing Range
6 mm to 12 mm 24mm (sealed glass unit to form triple glazing) 28mm (sealed glass unit to form triple glazing)Frame Finishes
Standard white (HIPCA semi-gloss). Any standard powder paint, wood grain or anodised finish to order.- Warmer A Series 41 single hinged window will reduce heat loss by up to 50% using standard glass and up to 65% with a thermally efficient glass (low-E). Further improvements are possible using sealed glass units that create triple glazing. High performance compression seals will almost eliminate drafts and ensure much greater comfort near the window. The effectiveness of the insulation is measured by U-values, the lower the figure the better the insulation.
INSULATION (U-VALUE) CALCULATED IN COMBINATION WITH A PRIMARY WINDOW AT BRFC SAMPLE SIZE OF 1430 X 1230MM
GLASS METAL PRIMARY WINDOW TIMBER PRIMARY WINDOW 6 - 12mm 2.85 W/m2K 2.58 W/m2K 6 - 12mm low-E 1.91 W/m2K 1.79 W/m2K 24-28mm gas filled low-E sealed units 1.73 W/m2K 1.63 W/m2K 24mm enhanced thermal sealed units 1.34 W/m2K 1.27 W/m2K NOISE INSULATION MEASURED IN COMBINATION WITH A PRIMARY WINDOW
GLASS 50MM CAVITY 100MM CAVITY 200MM CAVITY 6 - 6.4mm 41 dB (Rw) 45 dB (Rw) 47 dB (Rw) 6.8 - 7.5mm 42 dB (Rw) 46 dB (Rw) 48 dB (Rw) 8 - 10mm 43 dB (Rw) 47 dB (Rw) 49 dB (Rw) 10.8 - 12mm 44 dB (Rw) 48 dB (Rw) 50 dB (Rw) SECURITY PERFORMANCE (MAXIMUM ACHIEVABLE, CONTACT SELECTAGLAZE FOR SPECIFICATION REQUIREMENTS)
TEST STANDARD INTRUDER Secured by Design (accredited police preferred product) BLAST ISO 16933 EXV 33 (single side hung only) BALLISTIC N/A FIRE N/A Styles available
Section diagrams
- H6 Slimline Handle (Lockable)
- H7 Non-Locking Handle
- H8 Locking Handle
- H9 Rosette (Square Drive/Removable Key)
- H12 Peardrop Handle (Allen Key Lockable)
- H15 Reeded Handle (Allen Key Lockable)
- H16 Monkeytail Handle (Allen Key Lockable)
- H18 Vivo Low Profile Handle
- H21 Flush Lock with Cover Disc
- H22 Flush Lock with Security Cover Plate
- L7 Spring Catch
ITEMS FINISHES H6 Slimline Handle (Lockable) White Black Gold Polished chrome Satin chrome H7 Non-Locking Handle Match frame colour H8 Lockable Handle Match frame colour H9 Rosette (Square Drive/Removable Key) Match frame colour H12 Peardrop Handle (Allen Key Lockable) Black Polished Brass Polished chrome H15 Reeded Handle (Allen Key Lockable) Polished brass Polished chrome Satin chrome H16 Monkeytail Handle (Allen Key Lockable) Black H18 Vivo Low Profile Handle Polished chrome Satin chrome Match frame colour H21 Flush Lock with Cover Disc H22 Flush Lock with Security Cover Plate Match frame colour