Security Boss SB Standard Door Mount Pet DoorThe SB Standard Pet Door is Security Boss' highest rated utility, economy pet door made for doors 1 1 4" to 2" thick. This door has several attributes that sets it apart from other utility or lower priced pet doors. All Security Boss products are hand built to order. Features Strongest Frame Weatherized Flap Prevents Yellowing & Shrinking Security Solid 1 4" ABS Security Locking Panel Door model fits 1 1 4" to 2" thick doors Each door has a slide in