1613 X 2400 Door Frame 56 X 80 pre-primed What opening size do I

What opening size do I need for this window

3375mm wide X 1775mm high

This door fits a 762mm door frame opening

you need this kit

Is this plate sold individually or as a pair

1613 X 2400 Door Frame 56 X 80 pre-primed What opening size do IThe DF56801624 is a solid meranti timber door frame sized 1613mm wide x 2400mm high, with a robust 56mm x 80mm frame section. Designed for standard double door or wide single door openings, this frame is supplied unassembled for easy transport and on site fitting. Crafted from solid meranti a dense, durable hardwood widely used in South African joinery this frame offers excellent stability and a quality finish that accepts paint or stain. Available