John Guest Acetal Copolymer Tube Fitting, Straight Adaptor, 1/2" Tube OD x 1/2" NPTF Male (Pack of 10) 761475101127 while the other has a

while the other has a 2" Expansion panel

Patented Gap Guard prevents gaps between rail and mattress

Brand Enesco Model 4023530 Size 4-1/8" x 3-1/2" x 2-3/4"

All units include the necessary installation hardware and lock rings for a bolt-off/ bolt-on solution

John Guest Acetal Copolymer Tube Fitting, Straight Adaptor, 1/2" Tube OD x 1/2" NPTF Male (Pack of 10) 761475101127 while the other has aBrand John Guest Model PI011624S Color White Size 1 2" Tube OD x 1 2" NPTF Male Straight adapter connects pipes or fittings of different types in a straight line Push to connect fitting connects to pipes or tubing on one end and has an NPTF male connector on the other Made of acetal copolymer plastic for low moisture absorption and high tensile and flexural strength Working pressure of up to 150 psi Meets NSF ANSI standards 14, 51, and 61 for quality