Magnetic, velcro and cat proof insect screens for windows. You cut each one to your own opening and fix it with magnets or velcro, so nothing is screwed into the frame. Delivery across Sri Lanka is free over රු10,000, otherwise රු4,000.
Magnetic Window Screen
A DIY magnetic insect screen in standard or midge mesh, seven sizes from 50 x 50 cm to 200 x 200 cm, on a slim PVC frame that lifts off with a finger tab.