Heavy Duty 91 (VS)

A heavy-duty vertical sliding unit supported on high capacity spring balances suitable for treating monumental sash windows found in Victorian and Edwardian buildings. Thicker glass options provide high levels of noise insulation and with a secure lock option, it has accreditation to Secured by Design. The sashes contra slide to assist cleaning and a minimum frame to frame gap of 75mm is recommended to allow access to the outer window.

Recommended maximum frame sizes (mm), based on 6mm toughened glass

Height (mm) Width (mm)
5200 2350

Recommended maximum frame sizes (mm), based on 12.8mm acoustic laminate glass

Height (mm) Width (mm)
3500 1700

Balance Capacity

90kg 

Glazing Range

6mm to 12.8mm

Frame Finishes

Standard white (HIPCA semi-gloss). Any standard powder paint, wood grain or anodised finish to order.

Vertical Sliding

Vertical Sliding Product

Gallery

Styles available

Vertical sliding standard and arched head secondary glazing styles

Section diagrams

Selectaglaze secondary glazing Series 90 heavy duty vertical sliding section diagrams

Warmer

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  2.89 W/m2K  2.62 W/m2K
 6 - 12mm low-E  1.93 W/m2K  1.80 W/m2K

Quieter

NOISE INSULATION MEASURED IN COMBINATION WITH A PRIMARY WINDOW
GLASS 50MM CAVITY 100MM CAVITY 200MM CAVITY
 6 - 6.4mm  40 dB (Rw)  44 dB (Rw)  46 dB (Rw)
 6.8 - 7.5mm  41 dB (Rw)  45 dB (Rw)  47 dB (Rw)
8 - 10mm 42 dB (Rw) 46 dB (Rw) 48 dB (Rw)
10.8 - 12mm 43 dB (Rw) 47 dB (Rw) 49 dB (Rw)

Safer

SECURITY PERFORMANCE (MAXIMUM ACHIEVABLE, CONTACT SELECTAGLAZE FOR SPECIFICATION REQUIREMENTS)
  TEST STANDARD
INTRUDER Not certified second barrier to entry
BLAST N/A
BALLISTIC N/A
FIRE N/A
  • H3 Recessed Finger Pull
  • H17 Cranked D Handle
  • H23 Locking Actuator
  • H26 Low Profile Locking Handle
ITEM FINISHES
H3 Recessed Finger Pull H4 Moulded Handle H17 Cranked D Handle H26 Low Profile Locking Handle Match frame colour
L2 Fitch Catch (Lockable) White Black Gold Polished chrome Brushed steel

Looking for more?

To view the coupling guide and other documents available, please visit the technical downloads.

Go to technical downloads

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