A 53mm (53-400) GPI neck finish fits 20 dram, 30 dram, 40 dram, 60 dram, and 3 oz flower jar bases. The standardized 53mm mouth diameter provides a wide opening for rapid automated funnel drops during packaging and easy hand-scooping.

To cross-reference specs before ordering, check technical specification tables inside each product listing.

• 20 Dram & 30 Dram Jars: Sized for an eighth ounce (3.5 grams) of dry flower capacity.
• 40 Dram & 60 Dram Jars: Built for quarter ounce (7 grams) to half ounce (14 grams) flower loads.

No, 53-400 glass and PET jars sell as standalone bases and require separate 53mm closure caps. Combining 53mm jar bases with push-and-turn child-resistant caps meets Title 16 CFR 1700.20 and ASTM D3475 standards for retail compliance.

Browse matching closures in our 53mm Caps Collection, verify dimensions on our Flower Jar Sizing Chart, or check state packaging rules via our State Compliance Regulations Guide.

Denser indica nugs fit easily inside 20 or 30 dram jars, while fluffier sativa strains require 40 dram jars to avoid squishing calyxes. Matching volumetric jar depth to flower fluffiness preserves trichome integrity and prevents buds from sticking to cap liners during shipping.

To cross-reference specs before ordering, check technical specification tables inside each product listing.

• 30 Dram Jars: Holds 3.5g of medium-density dry flower with room for humidity packs.
• 40 Dram Jars: Provides 5 oz of volumetric space for fluffy 3.5g or dense 7g flower fills.

Straight-sided 53mm jars feature zero body taper, which prevents labels from wrinkling or going crooked on wrap labelers. Smooth cylindrical glass and PET walls allow pressure-sensitive labeling machinery to apply dispensary branding and compliance text cleanly without line jams.

To cross-reference specs before ordering, check technical specification tables inside each product listing.

Explore pre-applied label application options through our In-House Label Application Service.

Inventory ships directly from our local Sacramento warehouse so clients can access single units, standard split packs, or master wholesale cases without minimum constraints. Local warehouse stocking eliminates long factory lead times and keeps commercial filling lines operating continuously.