Woot offers Masterplug Weatherproof Cord Protector Box for $19.99 (orig. $29.99). Free shipping for Prime Members.

Product Description:
The weatherproof outdoor outlet box creates a dust cover for cord extensions, outlets and plugs. It is splash proof with an IP54 rating. The outlet box is big enough to fit large adapters, transformers and timers.
This spacious watertight electrical box is suitable for use with up to four power strip boxes. It covers cords, wire and cables and provides safety with a water proofing effect. The Masterplug Weatherproof Electrical Box is an IP54 rated water resistant plastic box which has five cable inlet openings and two hole pins.
Keep your outside outlets safe and dry for the ultimate protection of your devices. This outdoor electrical box is intended to be used with a multi-socket extension lead.
The interior dimension of the outdoor cable box is spacious enough to accommodate AC/DC adapters, transformers, plug in timers and other on/off controllers.
Save time and energy by using timers in our junction box. When mounting outdoor box, use screws and adhesive hook and loop velcro fastener on power strip box for extra stability and security.
Features

• Watertight
• Multipurpose
• Portable
• Dustproof
• Wall Mountable
• Durable

Dust Barrier

• This waterproof outlet cover provides protection against rain, splashing, dust, and dirt.
• The heavy duty, durable plastic material of this weatherproof box is great for hot or cold temperatures.
• The enclosure is IP54 rated in use, when the front cover is securely closed, the sealed construction provides a high level of protection against the ingress of water and dust.
• Access to the enclosure is by means of side hinged front cover, which can be locked by a padlock (not supplied).

Cord Box

• This outdoor electrical box is designed to fit bulky adapter, transformer, timer as well as other electrical connectors.
• This box provides storage for outdoor extension cord cover, LED strip light, landscape lights, etc.
• It is intended to be used with a multi-outlet power strip to suit the number of items of equipment needed- up to 4 outlets is recommended (not supplied).

Outlet Box

• Convenient design makes this weatherproof outlet cover easy to use.
• Open and close the box door with lockable latches.
• Place the power connector through the pre-drilled hole of the outdoor plug cover.
• Use a mounting plate to attach to the surface or store the box on the ground.
• The various cable entry options provide a safe and convenient wall-mounted housing for power supplies for equipment such as garden lighting, water features, exterior lighting, decorations etc.

Large Capacity

• This cord cover box is designed with five separate cable outlets and two optional m20 gland points to fit big cords.
• In addition, junction box is suitable for use with up to four power strips.
• The unit provides ample space to house bulky transformers, plug-in timers, and other on/off controllers.
• A length of self-adhesive hook and loop fastener material is provided to fix a multi-outlet power strip in the most convenient position.

Wall Cord Cover

• This outdoor waterproof box is designed with wall mount capability for an 'off the floor' neat and tidy solution.
• This outlet cover box can be installed in an indoor garage, outdoor shed or exterior wall. Keep your electrical equipment safe and dry.