Master-Link Supply, Key-Link Fencing & Railing and Cardinal Building Products are all affiliates of Superior Plastic Products, Inc. Superior is the flagship and serves as corporate for the group. Superior is a family-owned business founded in the late seventies by the Lapp family and located in picturesque Lancaster County, PA. Superior and its affiliated companies thrive in providing jobs to the local community and quality products to the building product industry.


Superior Plastic Products

Manufactures Vinyl Railing, Fencing, Posts & Columns and Lawn & Garden Products.


Key-Link Fencing & Railing

Manufacturer of Aluminum Railing & Fencing Systems, featuring Vertical & Horizontal Cable Rail.


Cardinal Building Products

Mid-Atlantic Wholesale Distributor offering Decking, Railing and other exterior building materials.


Master-Link Supply

Retail & Wholesale supplier for Chain-Link Fence, Manure Pits, Security Panel Rentals & Dog Kennels.

Vinyl Railing & Fencing

Lawn & Garden

Aluminium Railing & Fencing

Cable Rails Systems

Decking & Railing

Alternative Lumber

Chain-Link Fencing

Dog Kennels