This is a kitchen cabinet shelf bracket for 7/8" thick shelves with 1/4" peg hole. I recommend printing it on its side for maximum strength and supports. I have printed in both 1.5 and 2.0 layer height with really no difference. 

Factory clip had three supports under the ledge I only did two and seems to hold fine.

With 100% infill and supports is uses less than 5g of filament.