Please note this product might take a little longer to arrive as it may be shipped from outside the uk. A practical solution for every house with a garden. The petsafe staywell dog flap is built into the door or wall. The 2 way flap system enables you to decide and set whether your pet can go in and out any time or whether the door stays locked. The 2 way flap can be used for entry and exit locked measurements of petsafe staywell® pet door original m total size 352 x 294 mm diameter 281 x 237 mm for maximum shoulder width 219mm for dogs up to a max. Of 18kg petsafe staywell® l total size 456 x 386 mm diameter 370 x 314 mm for maximal shoulder width 290 mm for dogs up to a max. Of 45kg overview colour white for small and large dogs designed for doors with hollow cores, with panels or walls 2 way flap fixed, transparent flap weatherproof self sealing magnetic flat incl. Tunnel length 5cm 3 year guarantee