Universal Gutter Endcaps w/ Rubber Seal for Zinc Half-Round Gutters - 5" 43005008 It is primarily designed for

It is primarily designed for low-mid range PSI masonry applications and should be used when attaching insulation over CMU block

for example

502 (d) (2) (3) (4) (15) and OSHA 1910

and base plate

Produced from prime Galvalume® steel and available in a premium 70% PVDF finish

Universal Gutter Endcaps w/ Rubber Seal for Zinc Half-Round Gutters - 5" 43005008 It is primarily designed forZambelli universal half round gutter endcaps are manufactured from pure VM Zinc and are the perfect fit for Zambelli half round gutter systems. Featuring a built in rubber seal, Zambelli universal half round gutter endcaps feature a compression fit, no solder design for fast and easy installation. Universal endcaps are not "handed". They will fit both left and right ends.