
Vertical Sliding
Series 90: Heavy duty framing system with specialist balances that allows very large sash windows to be treated and is accredited to Secured by Design.
Specialist balances are incorporated into the frame to offset the additional weight inherent to larger windows.
Specialist balances are incorporated into the frame to offset the additional weight inherent to larger windows.

Series 90 Heavy Duty
A heavy duty vertical sliding system operating with specialist balances that allow large and weighty panels to operate with ease. The system is used to treat the sizable sash windows often found in Victorian and Edwardian buildings. A thicker range of glass offers higher levels of noise insulation and a robust lock option achieves enhanced security and Secured by Design accreditation.
Recommended maximum frame sizes (mm), subject to balance capacity
H | W | ![]() |
3600 | 2000 | Link to BIM data |
Balance Capacity
Maximum area dictated by standard 50Kg balance capacity or 65kg to special order.Glazing Range
6mm to 12.8mmFrame Finishes
Standard white (HIPCA semi-gloss). Any standard powder paint, wood grain or anodised finish to order.- Warmer A Series 90 window will reduce heat loss by up to 50% using standard glass and up to 65% with a thermally efficient glass (low-E). High performance brush 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 2.89 W/m2K 2.62 W/m2K 6 - 12mm low-E 1.93 W/m2K 1.80 W/m2K 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) SECURITY PERFORMANCE (MAXIMUM ACHIEVABLE, CONTACT SELECTAGLAZE FOR SPECIFICATION REQUIREMENTS)
TEST STANDARD INTRUDER Secured by Design (accredited police preferred product) BLAST ISO 16933 EXV 33 BALLISTIC N/A FIRE N/A Styles available
Section diagrams
- 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 H23 Locking Actuator Match frame colour L2 Fitch Catch (Lockable) White Black Gold Polished chrome Brushed steel