4 breeze blocks (BD18)

Hi, I am after 4 breeze blocks, if anybody around the Shipley area has any that no longer need, I have started to tidy up our cats 🐈outdoor wood shelter, (he prefers to sleep out in summer, he gets too warm inside) , the wooden legs have started to rot, so hoping to remove them and stand it on blocks. Thanks for reading 😊 Genuine request.