From utilizing packing tractors and gravel bags to improved face management and feed out techniques, bunker and silage pile management has come a long way in the past decade. Along with these improvements, feed managers are realizing the best way to reduce spoilage is by using multi-layer covering techniques.
Up North Bunker Covers

The combination of our 2 mil Silage Shield™ covered by our 5 mil black and white bunker covers ensures an airtight seal with quality products that producers have come to rely on for the best protection of their valuable feedstuffs. Up North Plastics is your partner in quality feed storage.
Why Buy Up North?

Quality
Our bags have two to three times the puncture and tear resistance of our foreign competitors’ products.
Service
Our network of distributors and dealers is unparalleled in the industry, which ensures your buying experience will be a good one. Up North’s fleet of 300+ semi trucks ensure that you get your bags when and where you need them.
Up North Bunker Sizes Available:
- 25’ x 100’
- 32′ x 100′
- 32′ x 150′
- 40′ x 100′
- 40′ x 150′
- 40′ x 200′
- 40′ x 1000′
- 50′ x 100′
- 50′ x 150′
- 50′ x 200′
- 50′ x 1000′
- 60′ x 100′
- 60′ x 150′
- 60′ x 200′
- 60′ x 500′
- 60′ x 1000′
- 80′ x 100′
- 80′ x 150′
- 80′ x 200′
- 80′ x 500′
- 80′ x 1000′
- 100′ x 100′
- 100′ x 150′
- 100′ x 200′
- 100′ x 250′
Raven Bunker Covers

FeedFresh® silage covers combine proven product technology from our expertise in the grain and construction markets to produce the ultimate silage covering product.. By utilizing our Dura♦Skrim® technology, we can offer the strongest cover available. Our experience with multi-layer gas barriers contributes to the ultra-low oxygen transmission rate (OTR) of this product. This allows FeedFresh® silage covers to provide superior strength and maximum forage freshness.

Raven custom size covers are available through Lange Ag Systems! Contact us for size and pricing!