Put in a gallon jar.

6 c. sliced cucumbers
1 c. sliced onion
1 c. sliced peppers
2 tbsp. salt
2 c. sugar
1 c. vinegar
1 tsp. celery seed
1/2 tsp. mustard seed

Mix together. Put in refrigerator. Stir once for several days to dissolve sugar. Will keep for 1 year in refrigerator.