The PCDE (with an ACME Screw Drive) and HPCDE (with a Hydraulic Drive) models come equipped with factory supplied enclosures made with clear or tinted acrylic panels.  The acrylic panels provide a smooth interior for the lift to operate.  All other features are the same as the CDE and HCDE models.  The PCDE and HPCDE models are attractive and permit ambient light into the runway.  The user has a view from the lift during operation.  The PCDE and HPCDE models can be enclosed overhead to protect the user from the elements.