Hinged Door Depth Extention Kit for H218 / H318 Fits All Existing Or Previous Versions Of The Open House 18" Enclosure Injection-molded High-impact Metal Hinges Abs-etl Rated plastic With A Ul-std 1492 Rating Adds 1.5" Of Light-weight removable door for H218A/H318 enclosures Adds over 1" depth to enclosure allowing room for larger power supplies Dual installation option with easy "snap" installation or tri-lobular screws Secure closure with snap action lock or optional keylock (H208)