Specialists in Security Doors, Window Exchange & Fly Screens. Security Doors, Windows & Equipment - Northgate, QLD . Product: Screens, Window Grilles, Window Screens. Kind: Aluminium, Pet, Screen, Sliding, Stainless, Steel. Type: Commercial, Industrial, Residential. Brand: Alspec, Capral, Crane, Invisi-Gard. Hours of Operation: Open Monday - Friday, Open Saturdays. Payment Method: Cheques, Direct Debit, EFT, Mastercard, Money Order, Visa. Service Option: Free Quotes