Subframes
Showroom Locations:
Design Centre, Chelsea Harbour, London,
SW10-0XE
Tel: 0207 376 7000
Open Mon-Fri 10-5.30
Church Street, Weybridge, Surrey, KT13 8DL
Tel: 01932 851081
Open Mon-Fri 9-5.30,
Sat 10-2.0
Here is an image of an 18mm plywood subframe: