BeeCastle Beeswax-Coated Plastic Foundation Sheets for Medium Langstroth Frames — 20-Pack, 5.51" x 16.65" Durable Pre-Waxed Insert

BeeCastle 20-pack beeswax-coated plastic foundation sheets are ready-to-use foundation inserts sized for medium Langstroth frames, giving bees an accepted surface to start comb building quickly.

These foundation sheets combine a food-grade plastic base with a beeswax coating so your colony recognizes the material and begins constructing comb without the wait for melted wax to be accepted. Each sheet measures 16.65 x 5.51 inches (42.2 x 13.9 cm) to fit standard medium honey frames and slides into grooved tops without needing extra reinforcement. The set of 20 provides enough foundation for hive maintenance, seasonal expansion, or replacing old or damaged sheets.

How do these waxed foundation sheets speed up comb building?

The beeswax coating signals familiar texture and scent to worker bees, encouraging them to draw comb faster than plain plastic. Because the sheets are pre-coated, you avoid the extra step of waxing each sheet by hand and reduce the time frames stay unoccupied.

• Pre-coated beeswax increases brood comb acceptance rates.
• Food-grade plastic base keeps sheets dimensionally stable across humid conditions.
• Fits directly into grooved medium Langstroth frames for immediate use.

Will these foundations fit my hive frames and stay secure?

Each sheet is cut to 16.65 x 5.51 inches to match standard medium Langstroth frames. They’re designed to slip into the top groove and remain in place without additional reinforcement, though adding light fastening is optional in high-traffic or transport situations.

• Exact medium frame sizing: 42.2 x 13.9 cm for accurate fit.
• Low-profile edges to slide into frames smoothly.
• No glue or wiring required for regular stationary hives.

What advantages does plastic with beeswax coating offer over all-wax or uncoated alternatives?

Plastic foundations resist sagging and retain shape through temperature and humidity changes better than full beeswax sheets. The beeswax coating preserves the scent and texture bees prefer while giving the durability and long life of a plastic core.

• Durable plastic reduces breakage when handling frames.
• Wax coating retains bee attraction without full wax fragility.
• Reusable plastic base can outlast pure wax sheets when maintained properly.

How many sheets do I get and what situations are they best for?

This package includes 20 beeswax-coated foundation sheets, a practical quantity for backyard beekeepers replenishing a few medium boxes or for hobbyists building supers. The set is suitable for seasonal expansion, replacing damaged comb, or preparing new frames for nucs and splits.

• 20 sheets supply multiple medium frames for one or several boxes.
• Good for spring build-up, swarm prevention preparation, and routine maintenance.
• Convenient for both novices and experienced beekeepers managing medium Langstroth equipment.

Who is this for: Beekeepers running medium Langstroth frames who want a balance of immediate comb acceptance and long-term durability. If you need ready-to-install foundation that reduces prep time, maintains consistent comb shape, and fits standard medium frames, these BeeCastle waxed plastic foundations are made for hobbyists, sideliners, and small commercial operations seeking reliable, easy-to-use foundation sheets.