4 WAY SWITCH MODE The pet door could be adjusted by the Red and Green switches with tabs to 4 modes out only in only both in and out and fully locked easy control of your pets in and out SIZE APPLICATION Outer Size 98 x 11 x 094W x H x D Inner size 79 x 87W x H CutOut Size 83 x 95 W x H suitable for mounting on glass door or windows suitable for cat and doggie lighter than 2754 lb and waist circumference shorter than 248 SAFE THOUGHTFUL The transparent flap let pet see through the door Exterior rain seal is for waterproof Brush strip eliminates noise from the door closing EASY TO INSTALL Complete instructions included make you easily install in windows glass metal door etc EXCELLENT QUALITY Made of ABS material weatherresistant the surface is smooth and durable