Add this easy-to-install door flap to an existing New Age Pet dog house for extra protection from wind, rain and other harsh weather and to keep dogs comfortable during the summer and winter months. Three sizes available; Medium, Large and Extra Large. Medium compatible with ECOFLEX Lodge Style Dog House ECOH203M-GN and ECOFLEX Rustic Style Dog House Mossy Oak ECOH206M, Large size compatible with ECOFLEX Bunk Style Dog House ECOH103L, Extra Large size compatible with ECOFLEX Bunk Style Dog House ECOH103XL and ECOFLEX Lodge Style Dog House ECOH203JMBMedium door flap measures 11.5″W x 14.5″HLarge door flap measures 14″W x 18″HExtra-large door flap measures 15.5″W x 19″H. Color: Clear.