EASYREP Adjustable Door Holder Stay – Holds French & Patio Doors Open from 26–42 cm – Quick-Lock for All Pets, Ventilation Easy Access – No Drilling, Made in Britain – White

ONE STAY, EVERY OPENING — 26 to 42 cm adjustable. Dial in exactly the gap you need with the quick-lock twist collar. A 26 cm gap for cats and breezes, a 42 cm gap for larger dogs and warmer days. Replaces both standard and XL fixed-size door holders.
FITS ANY DOUBLE DOOR WITH HANDLES. Hooks between the handles of French doors, patio doors, uPVC doors, conservatory doors and bifolds. No screws, no drilling, no fittings — clip on, twist to lock, and clip off again in seconds. Move it from door to door with no marks left behind.
KEEPS PETS, FRESH AIR AND DAILY LIFE FLOWING. Let the dog or cat come and go on their own, air out cooking smells, dry off the kitchen floor, and stop doors slamming in a sudden breeze — all while the doors stay safely held at the width you chose.
ENGINEERED, NOT JUST ELASTIC. A rigid arm and proper quick-lock mechanism hold position reliably year after year. Soft on handles, weather-resistant for indoor and outdoor use, and built to take a stiff wind