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5th June 2024
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28th July 20246 Frame Dual Poly Nuc
£54.99
The UK’s first poly nuc manufactured from Expanded Polypropylene (EPP) — stronger, more durable, and better insulating. British National design, dual split 3-frame brood box, 3.5L top feeder, open mesh floor, and recessed lid. Weighs just 1.6kg. No painting required. Complete kit — nothing extra to buy (except Bees).
Out of stock
The UK’s First & Only Poly Nuc Made From EPP
Every other poly nuc on the market is made from Expanded Polystyrene. We changed that. Our 6 Frame Dual Poly Nuc uses Expanded Polypropylene — a stronger, warmer, completely waterproof material that never needs painting. Exclusively designed, registered, and available only from Old Castle Farm Hives.
Why EPP Changes Everything
Six reasons to choose EPP over EPS
Expanded Polypropylene isn’t just a better polystyrene — it’s a fundamentally different material. Here’s what that means for your bees and your beekeeping.
No Painting — Ever
EPP’s closed molecular structure gives it a permanent UV-stable neutral colour. No brushes, no paint, no prep — simply wipe clean each season.
Superior Thermal Insulation
EPP outperforms EPS on heat retention, keeping colonies warmer through cold British winters and cooler in summer — meaning faster build-up and healthier bees.
Impact Resistant
The same material used in motorcycle helmets. Drop it, knock it, stack it — EPP absorbs impacts and springs back where EPS would chip or crack.
100% Waterproof
EPP has zero water absorption — no swelling, no rot, no degradation even through the wettest winters. Moisture can never compromise the box.
Ultralight at 1.6kg
At just 1.6 kg, one of the lightest 6-frame nucs in the UK. Move it one-handed, carry multiples, or transport without straining your back.
100% Recyclable
EPP is fully reprocessable at end of life — something EPS cannot claim. The environmentally responsible choice with zero performance compromise.
The Dual Split Design
One box. Two colonies.
The removable Correx divider splits the 6-frame brood box into two fully independent 3-frame nucs — each with its own mesh floor section and entrance disc. No other poly nuc offers this flexibility at this price.
Queen Rearing & Introduction
Perfect for walk-away splits and controlled queen introduction. Introduce a new queen on one side while your colony settles on the other — all in one box.
Swarm Control & Management
Run two small colonies side by side in the same footprint. Manage swarm splits efficiently and monitor both halves in a single apiary visit.
Expandable to 14×12
Add our eke extension to convert to full 14×12 brood depth — giving a thriving colony more space without needing a new box.
Upgrade Aluminium Divider Available
The standard Correx divider works perfectly, but an upgrade aluminium composite version is available separately. Colour of Correx board may vary.


New Design Top Feeder
Feed liquid or fondant — your choice
The purpose-built 3.5 litre top feeder works for liquid syrup in summer and fondant or pattie in winter — no adapters or extra kit required.
3.5 Litre Capacity
Generous volume reduces refill frequency — less disturbance to the colony, less time spent at the hive.
Lid with Hive Strap Recess
Recessed indentation keeps your hive strap secure during transport — no additional hardware needed.
Top Tip — Liquid Feeding Seal
When feeding syrup, fit the silicone bung into the feeder hole, smear a little petroleum jelly around its perimeter, then GENTLY TWIST it firmly into position. This creates a tight seal and prevents syrup leaking into the brood box. You could also lightly sand around the hole to remove production mold marks to get an extra tight seal. Need a replacement bung? Order one here →
Everything Included — Nothing Extra to Buy
Complete kit. Ready to use.
Every component your colony needs comes in the box. Here’s exactly what you get for £54.99.
6-Frame British National Brood Box
Dual 3-frame split design with integrated mesh floors.
3.5L Top Feeder
Liquid syrup or fondant/pattie — no adapters needed.
Correx Dividing Board
Removable divider for dual 3-frame operation. Colour may vary.
Open Mesh Floor
Ventilated mesh for Varroa monitoring and improved airflow.
Lid with Strap Recess
Recessed indentation for hive strap — secure in transport.
2× Entrance Discs & Screws
One for each section of the split nuc, with fixing screws.
UV Filter Built In
EPP’s UV-stable filter means permanent colour — no painting needed.
Registered Design
IPO Design No. 6345341 — exclusively designed and sold by Old Castle Farm Hives.
Technical Specifications
Full specifications at a glance
| Frame Standard | British National |
| Frame Capacity | 6 frames (or 2 × 3 frames when split) |
| Material | Expanded Polypropylene (EPP) — NOT Expanded Polystyrene (EPS) |
| Weight | 1.6 kg — ultralight |
| Feeder Capacity | 3.5 litres |
| Feeder Compatibility | Liquid syrup AND fondant / pattie — no adapters needed |
| Floor Type | Open mesh — Varroa monitoring and improved airflow |
| Divider Type | Removable Correx (upgrade aluminium composite available separately) |
| Entrance Discs | 2× included with fixing screws — one per split section |
| Lid | Recessed hive strap indentation — secure in transport |
| UV Filter | Built in — colour is permanent, no painting required |
| Painting Required | No |
| Recyclable | Yes — 100% EPP, fully reprocessable |
| Registered Design | IPO No. 6345341 |
| Availability | Exclusively from Old Castle Farm Hives |
Expand Your Setup
The complete Poly Nuc range
Every product in the range is designed to work seamlessly with your 6 Frame Dual Poly Nuc. Build the exact setup your apiary needs — from a second complete box to individual replacement parts.

Standard · £54.99
6 Frame Dual Poly Nuc — Standard
The hero product. Full 6-frame British National nuc with 3.5L feeder, Correx divider, mesh floor, lid, and 2× entrance discs. Complete kit — nothing extra to buy.

14×12 Version
6 Frame Dual Poly Nuc — 14×12
The standard nuc with the 14×12 eke extension pre-installed — full 14×12 brood depth straight out of the box. Ideal for beekeepers who run exclusively 14×12.

Expansion
14×12 Eke Extension
Converts your standard poly nuc to full 14×12 brood depth — giving a growing colony more space without buying a new box. Fits between brood box and feeder.

Expansion
Brood Box Extension
Additional brood space for thriving, established colonies. The modular way to scale up with your bees as the season progresses — expand, don’t replace.

Transport
Vented Transport Lid
Purpose-designed ventilated lid that fits the 6 Frame Dual Poly Nuc precisely. Keeps bees safe, calm, and ventilated during transport.

Transport
Mesh Transport Bag
Cordstring mesh bag for safe transport of the poly nuc. Additional security and ventilation when moving colonies — particularly useful at shows and collection points.

Upgrade
Aluminium Composite Divider
Upgrade from the standard Correx divider to a precision-cut aluminium composite version — maximum durability and years of repeated use. Fits without modification.

Upgrade
Stainless Steel Entrance Discs (125mm)
Premium corrosion-proof stainless steel alternative to the standard plastic entrance discs. 125mm — purpose-sized for the OCF entrance housing. A one-time buy that outlasts the hive.
Tier 5 — Spare Parts
Keep every nuc in service
Nothing ever needs replacing wholesale. Individual spare parts mean a single worn or damaged component is a quick, cheap fix — not an excuse to buy a whole new box.
| Part | Description | Link |
|---|---|---|
| Replacement Feeder (3.5L) | Top feeder — liquid syrup or fondant/pattie. | View → |
| Replacement Lid | Standard lid with hive strap recess. | View → |
| Replacement Correx Divider (Standard) | Standard-depth Correx dividing board. Colour may vary. | View → |
| Replacement Correx Divider (14×12) | 14×12 depth Correx divider for use with the eke extension. | View → |
| Spare Perspex Feeder Panels (×2) | Replacement Perspex panels for the 3.5L top feeder. | View → |
| Spare Silicone Bung (Feeder) | Replacement silicone bung for the feeder hole. Apply petroleum jelly and twist firmly for a leak-free seal. | View → |
| Plastic Entrance Discs (125mm) | Standard plastic hive entrance discs — 125mm. | View → |
| Stainless Steel Entrance Discs (125mm) | Premium corrosion-proof stainless alternative — 125mm. | View → |
Product Gallery
Every detail, considered





The UK’s first EPP poly nuc — only £54.99
Complete kit. No painting. No extra kit needed. Exclusively designed and available only from Old Castle Farm Hives. Making beekeeping affordable for all.
Add to Basket
| Weight | 6.2 kg |
|---|---|
| Product type | Nuc Boxes |
| Hive Type | National |
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